Engine backfires... - DodgeTalk : Dodge Car Forums, Dodge Truck Forums and Ram Forums
DodgeTalk : Dodge Car Forums, Dodge Truck Forums and Ram Forums
 HOME  FORUMS  GALLERY  GARAGE  TECH  CLASSIFIEDS  LINKS  MEMBER MAP  ARCHIVE  SPONSORS
INFO SITE HELP ARCADE TELL-A-FRIEND STAFF CONTACT US AUTO LOANS


DodgeTalk.com is the premier Dodge forum on the internet. Registered Users do not see the above ads.Please Register - It's Free!
Go Back   DodgeTalk : Dodge Car Forums, Dodge Truck Forums and Ram Forums > Dodge Truck, SUV and Van Forums > Vintage Dodge Truck Forums > 1972-1987 Dodge Ram Trucks (D, W-series)

Closed Thread
 
Thread Tools

DPW
 
  Engine backfires... - Posted: 01-07-2013, 07:52 PM
DPW's Avatar
Registered User
Joined: Jun 2011
Posts: 231
City: Calgary
State: AB
Status: Offline
View Member's FaceBook Profile
Post #1

Hi guys and gals, I have an 84 w150, the truck has had an engine swap to a 78 440. It ran good until I tried to park on a hill. Facing downward, I put the truck in park, then I let off the brake, and what sounded like the transmission slipping. Like gears grinding very slowly. Now when I try to accelerate fast the truck backfires like crazy, but not when I accelerate really slowly? Any help on what this is or what I should do to fix it? Could it be my timing?
View Public ProfileSend a private message to %1$sSend email to %1$sFind all posts by %1$sAdd %1$s to Your Buddy List Reply Reply With Quote
Sponsored Links
Advertisement
 

lunchbox1671
 
 Posted: 01-07-2013, 08:10 PM
lunchbox1671's Avatar
Fabricator Extraordinaire
Joined: Oct 2012
Posts: 207
City: Ephrata, WA
State: WA
Status: Offline
Post #2

hhhmmm sounds like timing to me. Possibly timing chain slipping or distributor gear wore out?
__________________
1975 Dodge D100
-Clubcab "Adventurer Sport"
-1-ton Dually
-440
-Auto
View Public ProfileSend a private message to %1$sSend email to %1$sFind all posts by %1$sAdd %1$s to Your Buddy List Reply Reply With Quote

DPW
 
 Posted: 01-07-2013, 08:15 PM
DPW's Avatar
Registered User
Joined: Jun 2011
Posts: 231
City: Calgary
State: AB
Status: Offline
View Member's FaceBook Profile
Post #3

Alrighty, I am completely new to working on trucks, and vehicles for that matter. How would I go about checking my timing and distributor? I believe you helped me out with my ignition problem a while back too, thanks for that.
View Public ProfileSend a private message to %1$sSend email to %1$sFind all posts by %1$sAdd %1$s to Your Buddy List Reply Reply With Quote

roadram360
 
 Posted: 01-07-2013, 08:20 PM
roadram360's Avatar
Registered User
Joined: Feb 2010
Posts: 1,700
City: mostly on the road
State: LA
Status: Offline
View This User's Gallery View This User's Garage
Post #4

might want to check for a vacuum leak too
__________________

you like your truck more than you like me. sometimes i do

1978 d-150, 95 360, eddy 750, 4 speed auto, 9.25 rear. her name is sabrina

GOD BLESS AMERICA

http://s745.photobucket.com/albums/x...am360/sabrina/
www.waltonandjohnson.com
www.marklevinshow.com
www.michaelberry.com
*DodgeTalk.com 318 Enthusiast Member #(129)*
View Public ProfileSend a private message to %1$sSend email to %1$sFind all posts by %1$sAdd %1$s to Your Buddy List Reply Reply With Quote

maachine
 
 Posted: 01-07-2013, 08:55 PM
maachine's Avatar
Registered User
Joined: Sep 2011
Posts: 2,568
City: Hammond
State: LA
Status: Online
Post #5

sounds like timing to me. if you are worried that the timing chain slipped....find top dead center.......mark your #1 plug on the distributor then turn the crank with a wrench till the mark on the harmonic balancer aligns with the timing mark at zero on the timing chain cover. pull the dizzy cap off and see if the rotor lines up with the #1 mark you made on the dizzy. if the rotor is 180* out then turn the crank over one complete rotation and see if the rotor lines up with your mark. if its not lined up then the chain slipped.

that grinding noise could very well be the park pin slipping.....but ya, i'd check the timing, make sure its where its supposed to be, then check for TDC, then check for vacuum leaks after that.
__________________
1987 Dodge W-150 "The Beast"
some sort of lift
33" AT's
LA 360 bored .030 over, EQ Magnum heads, Hooker Headers, true dual exhaust, Holley 4160 w/Truck Avenger parts, Edelbrock Performer dual plane intake, StreetFire ignition box & MSD coil
208 t-case/727A trans w/3.23 gears
View Public ProfileSend a private message to %1$sSend email to %1$sFind all posts by %1$sAdd %1$s to Your Buddy List Reply Reply With Quote

DPW
 
 Posted: 01-07-2013, 09:48 PM
DPW's Avatar
Registered User
Joined: Jun 2011
Posts: 231
City: Calgary
State: AB
Status: Offline
View Member's FaceBook Profile
Post #6

Thank you, I might need some more instruction, but I will check it out tomorrow after work.
View Public ProfileSend a private message to %1$sSend email to %1$sFind all posts by %1$sAdd %1$s to Your Buddy List Reply Reply With Quote

maachine
 
 Posted: 01-07-2013, 10:02 PM
maachine's Avatar
Registered User
Joined: Sep 2011
Posts: 2,568
City: Hammond
State: LA
Status: Online
Post #7

bring it, i'm sure everyone here is more than willing to help out
__________________
1987 Dodge W-150 "The Beast"
some sort of lift
33" AT's
LA 360 bored .030 over, EQ Magnum heads, Hooker Headers, true dual exhaust, Holley 4160 w/Truck Avenger parts, Edelbrock Performer dual plane intake, StreetFire ignition box & MSD coil
208 t-case/727A trans w/3.23 gears
View Public ProfileSend a private message to %1$sSend email to %1$sFind all posts by %1$sAdd %1$s to Your Buddy List Reply Reply With Quote

lunchbox1671
 
 Posted: 01-07-2013, 11:32 PM
lunchbox1671's Avatar
Fabricator Extraordinaire
Joined: Oct 2012
Posts: 207
City: Ephrata, WA
State: WA
Status: Offline
Post #8

x2 on timing/ignition.

Being parked on a hill doesn't help that carb much, either. I've had a couple rigs vapor-lock being parked on hills and going up a steep hill before. Once on a boat launch... Bad day...

Wouldn't hurt to investigate the coil and plugs, either. My Jeep had a plug cable melt and ground-out on an exhaust manifold intermittently. I didn't figure it out for a couple of trips. It had a lot of similar symptoms you are facing...

Backfiring is an igntion-timing and/or fuel-delivery issue.
__________________
1975 Dodge D100
-Clubcab "Adventurer Sport"
-1-ton Dually
-440
-Auto
View Public ProfileSend a private message to %1$sSend email to %1$sFind all posts by %1$sAdd %1$s to Your Buddy List Reply Reply With Quote

DPW
 
 Posted: 01-07-2013, 11:58 PM
DPW's Avatar
Registered User
Joined: Jun 2011
Posts: 231
City: Calgary
State: AB
Status: Offline
View Member's FaceBook Profile
Post #9

I park on flat ground. The day I went to park on a hill, I saw about a 200 inch whitetail, put it in park to grab my binos, and then it slipped. I never park on hills, mainly because my park brake doesnt work. I'll do the timing tomorrow after work.
View Public ProfileSend a private message to %1$sSend email to %1$sFind all posts by %1$sAdd %1$s to Your Buddy List Reply Reply With Quote

DPW
 
 Posted: 01-08-2013, 01:42 AM
DPW's Avatar
Registered User
Joined: Jun 2011
Posts: 231
City: Calgary
State: AB
Status: Offline
View Member's FaceBook Profile
Post #10

Holy shit, I've been looking at some youtube videos on how to replace a timing chain... am I going to have to take the engine out of my truck to do it? There is no way I am bringing my truck to a shop. I want to do everything on my own. I am just wondering, is it bad for me to be driving my truck with bad timing? Because if it isn't I would rather wait until the spring when I have a bunch of money saved up and a motorcycle to ride, to work on it. I will pull the distributor cap of tomorrow and check my timing chain though. Dam this truck.
View Public ProfileSend a private message to %1$sSend email to %1$sFind all posts by %1$sAdd %1$s to Your Buddy List Reply Reply With Quote

maachine
 
 Posted: 01-08-2013, 04:32 AM
maachine's Avatar
Registered User
Joined: Sep 2011
Posts: 2,568
City: Hammond
State: LA
Status: Online
Post #11

you dont have to pull the engine but it's serious work. investigate everything else before considering timing chain. that's the worse case scenario
__________________
1987 Dodge W-150 "The Beast"
some sort of lift
33" AT's
LA 360 bored .030 over, EQ Magnum heads, Hooker Headers, true dual exhaust, Holley 4160 w/Truck Avenger parts, Edelbrock Performer dual plane intake, StreetFire ignition box & MSD coil
208 t-case/727A trans w/3.23 gears
View Public ProfileSend a private message to %1$sSend email to %1$sFind all posts by %1$sAdd %1$s to Your Buddy List Reply Reply With Quote

coastermeister
 
 Posted: 01-08-2013, 07:32 AM
coastermeister's Avatar
Registered User
Joined: Apr 2006
Posts: 716
Status: Offline
Post #12

Could be a bad distributor cap or moisture in the distributor. How long since the cap and rotor have been replaced?
__________________
'86 D150 Custom LWB, White, A/C, 318-2bbl, 727, 6050 GVWR, 9-1/4 3.21 Sure-Grip
All Heavy Duty Options- 114 amp alternator, big radiator, transmission cooler, original owner, everything works!
View Public ProfileSend a private message to %1$sSend email to %1$sFind all posts by %1$sAdd %1$s to Your Buddy List Reply Reply With Quote

DPW
 
 Posted: 01-08-2013, 05:13 PM
DPW's Avatar
Registered User
Joined: Jun 2011
Posts: 231
City: Calgary
State: AB
Status: Offline
View Member's FaceBook Profile
Post #13

Okay so I checked my timing chain by taking the distributor cap off and watching. It's about 1/16 turn before it starts to move. I will post a pic of my distributor when I get home. Also another thing I might add, someone jacked my gas cap, it's been off for a while now. I made it out of aluminum, I guess thats why they took it. could the backfires be because of moisture on my fuel?
View Public ProfileSend a private message to %1$sSend email to %1$sFind all posts by %1$sAdd %1$s to Your Buddy List Reply Reply With Quote

roadram360
 
 Posted: 01-08-2013, 05:22 PM
roadram360's Avatar
Registered User
Joined: Feb 2010
Posts: 1,700
City: mostly on the road
State: LA
Status: Offline
View This User's Gallery View This User's Garage
Post #14

what do you mean by 1/16th turn? water could be the culprit. get a bottle of water dryer and dump it in the tank
__________________

you like your truck more than you like me. sometimes i do

1978 d-150, 95 360, eddy 750, 4 speed auto, 9.25 rear. her name is sabrina

GOD BLESS AMERICA

http://s745.photobucket.com/albums/x...am360/sabrina/
www.waltonandjohnson.com
www.marklevinshow.com
www.michaelberry.com
*DodgeTalk.com 318 Enthusiast Member #(129)*
View Public ProfileSend a private message to %1$sSend email to %1$sFind all posts by %1$sAdd %1$s to Your Buddy List Reply Reply With Quote

maachine
 
 Posted: 01-08-2013, 06:34 PM
maachine's Avatar
Registered User
Joined: Sep 2011
Posts: 2,568
City: Hammond
State: LA
Status: Online
Post #15

you'd probably see a lot more play than a 1/16th of an inch if it was bad. the thing to do is turn the engine, stop, then turn backwards and see how much the crank turns before the rotor turns.

start with the easy stuff first, spark plugs, spark plugs wires, cap, rotor, the water thing, coil. get a vacuum gauge and check to see how much vaccum you are pulling. stuff like that, the simple stuff.
__________________
1987 Dodge W-150 "The Beast"
some sort of lift
33" AT's
LA 360 bored .030 over, EQ Magnum heads, Hooker Headers, true dual exhaust, Holley 4160 w/Truck Avenger parts, Edelbrock Performer dual plane intake, StreetFire ignition box & MSD coil
208 t-case/727A trans w/3.23 gears
View Public ProfileSend a private message to %1$sSend email to %1$sFind all posts by %1$sAdd %1$s to Your Buddy List Reply Reply With Quote

DPW
 
 Posted: 01-08-2013, 07:25 PM
DPW's Avatar
Registered User
Joined: Jun 2011
Posts: 231
City: Calgary
State: AB
Status: Offline
View Member's FaceBook Profile
Post #16

Oh sorry for the confusion. By 1/16, I meant when i took the cap off, turned the motor forward until it started to move, then it took about 1/16 of a turn going backwards for the thing to start moving again. I am going to get a bottle of that water dryer and see what that does. Today coming home from work it didnt back fire once. Almost makes me believe it's the water in my fuel? It seems when I have a fresh tank of gas that my engine runs fine. Still no power, but no backfires as well.
View Public ProfileSend a private message to %1$sSend email to %1$sFind all posts by %1$sAdd %1$s to Your Buddy List Reply Reply With Quote

DPW
 
 Posted: 01-08-2013, 07:27 PM
DPW's Avatar
Registered User
Joined: Jun 2011
Posts: 231
City: Calgary
State: AB
Status: Offline
View Member's FaceBook Profile
Post #17





The first one is the distributor and the second is something right beside it. Says msd on it
View Public ProfileSend a private message to %1$sSend email to %1$sFind all posts by %1$sAdd %1$s to Your Buddy List Reply Reply With Quote

maachine
 
 Posted: 01-08-2013, 07:33 PM
maachine's Avatar
Registered User
Joined: Sep 2011
Posts: 2,568
City: Hammond
State: LA
Status: Online
Post #18

that's your coil. sends the spark to the distributor. the silver thing on the distributor is called a vacuum actuator, just so you know.

edit: ok i'm going to leave that there...wow my brain is fried. vacuum advance.....not actuator
__________________
1987 Dodge W-150 "The Beast"
some sort of lift
33" AT's
LA 360 bored .030 over, EQ Magnum heads, Hooker Headers, true dual exhaust, Holley 4160 w/Truck Avenger parts, Edelbrock Performer dual plane intake, StreetFire ignition box & MSD coil
208 t-case/727A trans w/3.23 gears
View Public ProfileSend a private message to %1$sSend email to %1$sFind all posts by %1$sAdd %1$s to Your Buddy List Reply Reply With Quote

DPW
 
 Posted: 01-08-2013, 07:33 PM
DPW's Avatar
Registered User
Joined: Jun 2011
Posts: 231
City: Calgary
State: AB
Status: Offline
View Member's FaceBook Profile
Post #19

Another thing, how do I tune my carb? Isn't it something like screw the two adjustment screws in all the way, then back out 1 turns? Then go from there? And screwing in is leaner right?
View Public ProfileSend a private message to %1$sSend email to %1$sFind all posts by %1$sAdd %1$s to Your Buddy List Reply Reply With Quote

DPW
 
 Posted: 01-08-2013, 07:41 PM
DPW's Avatar
Registered User
Joined: Jun 2011
Posts: 231
City: Calgary
State: AB
Status: Offline
View Member's FaceBook Profile
Post #20

Ok, so to check if I have a vacuum leak, I would put a vacuum gauge to the vacuum advance?
View Public ProfileSend a private message to %1$sSend email to %1$sFind all posts by %1$sAdd %1$s to Your Buddy List Reply Reply With Quote
Closed Thread


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Engine backfires and pops at 4500 rpms sherdep 3G Dodge Ram Performance Talk 16 05-15-2012 08:26 PM
With electrical load, engine backfires (ALOT) and dies Zable49 2G Dodge RAM - General Talk 14 02-23-2012 09:30 PM
Engine bogs then backfires through intake 360Nekked 2G Dodge RAM - General Talk 6 09-01-2008 12:20 PM
AC cuts out & engine backfires jgcjr2 2G Dodge RAM - General Talk 1 09-28-2007 12:08 AM
backfires and jerks danielr 2G Dodge RAM - General Talk 2 11-03-2004 09:58 PM



All times are GMT -5. The time now is 04:24 PM.





Privacy Statement