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backfireing
#537264
11/26/09 12:38 PM
11/26/09 12:38 PM
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Anonymous
OP
Unregistered
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Anonymous
OP
Unregistered
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I have a 1986 Dodge ramcharger with a 318. The truck was not running when I got it. I have replaced timing chain and gears, distrubiter, cap, ignition coil, plugs, wires, rotary button, alternator, battery. I have to spray gas in the carb and it will crank and run. Sounds good until you give it gas. When you put it in gear and give it gas it back fires threw the carb. The number 7 plug gets sut build up on it. Have also tried two different carbs. Will also pop in park while at a high rpm. Does anyone have sugestions on what I can do now.
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Re: backfireing
[Re: dodgetruck]
#537266
11/26/09 12:56 PM
11/26/09 12:56 PM
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Anonymous
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Unregistered
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Anonymous
OP
Unregistered
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I have done all the things you just suggested over and over. It is still poping from the carb. Do you know something else I can try. 
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Re: backfireing
[Re: HemidaveZ]
#537268
11/26/09 01:12 PM
11/26/09 01:12 PM
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Anonymous
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Unregistered
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Anonymous
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Unregistered
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No I have not checked it. Should I drop the exhaust manafold and go from there or what do you think would be the best way.
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Re: backfireing
[Re: strokin73cuda]
#537270
11/26/09 01:22 PM
11/26/09 01:22 PM
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Anonymous
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Unregistered
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Anonymous
OP
Unregistered
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im not the best machanic just a shade tree so please tell me what an acc. pump shot is. 
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Re: backfireing
#537271
11/26/09 01:27 PM
11/26/09 01:27 PM
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Joined: Oct 2003
Posts: 7,506
Az
Crizila
master
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master
Joined: Oct 2003
Posts: 7,506
Az
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Quote:
I have a 1986 Dodge ramcharger with a 318. The truck was not running when I got it. I have replaced timing chain and gears, distrubiter, cap, ignition coil, plugs, wires, rotary button, alternator, battery. I have to spray gas in the carb and it will crank and run. Sounds good until you give it gas. When you put it in gear and give it gas it back fires threw the carb. The number 7 plug gets sut build up on it. Have also tried two different carbs. Will also pop in park while at a high rpm. Does anyone have sugestions on what I can do now.
Run a compression test - or a leak down test to see if all the valves are sealing properly.
Fastest 300
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Re: backfireing
#537272
11/26/09 01:32 PM
11/26/09 01:32 PM
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Joined: Apr 2009
Posts: 228
northeast texas
strokin73cuda
enthusiast
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enthusiast
Joined: Apr 2009
Posts: 228
northeast texas
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Scince your pouring gas in the carb to get it to start is the reason for my question. Take the breather off the carb and with the engine not running look down inside the throat of the carb. while moving the throttle by hand (push it all the way open from completely closed position)and you should see two streams of gas shooting into the engine. If not start by fixing this first.
496 stroker,Indy srs , new best 6.87 @ 98 1.46 60'
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Re: backfireing
[Re: Crizila]
#537274
11/26/09 02:39 PM
11/26/09 02:39 PM
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Joined: Mar 2008
Posts: 5,746
Ontario, Canada
Dodgem
master
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master
Joined: Mar 2008
Posts: 5,746
Ontario, Canada
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Run a compression test - or a leak down test to see if all the valves are sealing properly.
Last 80's 318 I seen do that had a burnt exhuast valve on the sooty cylinder.
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Re: backfireing
[Re: Dodgem]
#537275
11/26/09 07:27 PM
11/26/09 07:27 PM
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Joined: Nov 2009
Posts: 3,410
Belpre,Ohio
CHAPPER
master
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master
Joined: Nov 2009
Posts: 3,410
Belpre,Ohio
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Carbs do not cause an engine to misfire or backfire. They only introduce fuel/air mixture to the engine. You say the firing orders is correct.
I would say you have an intake lobe wiped off the cam. One thing you might check, is pull the rocker covers off and make sure you don't have a pushrod shoved through a rocker. If you don't see any problems there, roll engine over and check for movement on all rockers. I suspect it's the intake lobe gone though. Another problem could be head gasket burned between cylinders...3/5..4/6.
I said intake,,,meant ehaust...sorry.
Last edited by CHAPPER; 11/26/09 07:51 PM.
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Re: backfireing
[Re: MoparforLife]
#537277
11/26/09 09:06 PM
11/26/09 09:06 PM
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Anonymous
OP
Unregistered
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Anonymous
OP
Unregistered
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just got done eating all day. i will try all sugestions tomorrow and keep yall informed 
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Re: backfireing
#537278
11/27/09 12:32 PM
11/27/09 12:32 PM
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Anonymous
OP
Unregistered
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Anonymous
OP
Unregistered
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Just pulled off the rocker arms and three push rods are bent. I know they need to be replaced but can that cause my problem.
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Re: backfireing
[Re: buildanother]
#537280
11/27/09 12:51 PM
11/27/09 12:51 PM
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Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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If'm wondering if they overrevved it & had a VP contact or if the tchain jumped? If it was me I'd 1st grab several replacent pushrods & retry it
live every 24 hour block of time like it's your last day on earth
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Re: backfireing
[Re: RapidRobert]
#537281
11/27/09 01:01 PM
11/27/09 01:01 PM
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Anonymous
OP
Unregistered
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Anonymous
OP
Unregistered
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I think the push rods are my fault . i tried to crank it after i set the timing on an exhaust stroke accidently.so im going to get the rods and try it again..
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Re: backfireing
#537282
11/27/09 02:47 PM
11/27/09 02:47 PM
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Anonymous
OP
Unregistered
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Anonymous
OP
Unregistered
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does anyone have a 85-89 318 for sale
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