new crank, now funny firing
Thread Starter
Junior Member
Joined: Feb 2010
Posts: 89
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From: england
Car: 89 gta
Engine: 5.7 supercharged
new crank, now funny firing
hey guys got a new one for you all.......
really starting to grow feed up of my t/a nothing but problems since i started the project


.... but the new problem is this......
new crank went in everything fine all back together went to start her up for the 1st time today and to me she sounds like she not on all 8 cylinders and the engine is trying to jump its way out of the engine bay lol.
changes all the plugs, wires have be cheeked again and again along with dizzy cap. just cant figure it out
have i missed something silly or what???????????????
i think its a timing ignition problem
any info would be much appreciated guys
thanks
bad
really starting to grow feed up of my t/a nothing but problems since i started the project



.... but the new problem is this......new crank went in everything fine all back together went to start her up for the 1st time today and to me she sounds like she not on all 8 cylinders and the engine is trying to jump its way out of the engine bay lol.
changes all the plugs, wires have be cheeked again and again along with dizzy cap. just cant figure it out
have i missed something silly or what???????????????
i think its a timing ignition problem
any info would be much appreciated guys
thanks
bad
Supreme Member
Joined: Jun 2005
Posts: 1,380
Likes: 6
From: Sydney, Australia
Car: '86 TA
Engine: '74 350
Transmission: 700r4
Axle/Gears: 2.77
Joined: Dec 2005
Posts: 6,499
Likes: 31
From: Macon, GA
Car: 1992 Camaro RS
Engine: Vortec headed 355, xe262
Transmission: T56
Axle/Gears: 9-bolt 3.70
Re: new crank, now funny firing
First thing to check is the firing order, then valve lash.
Is the crank balanced for your rotating assembly?
Is the crank balanced for your rotating assembly?
Thread Starter
Junior Member
Joined: Feb 2010
Posts: 89
Likes: 0
From: england
Car: 89 gta
Engine: 5.7 supercharged
Re: new crank, now funny firing
timing was set. crank and cam with the holes touching. and then top died piston 1 with the timing make set in the middel of the timing idercater on the chaine cover. and the dizzy facing piston 1.
the firing order as far as i know is in the right order cheaked more then once. started to take of the valve covers to make sure everything is right but ran out of time. thats the next job on my days of.
i dint get the crank balaced due to the motor been in the car still.
thanks for your help guys
bad
the firing order as far as i know is in the right order cheaked more then once. started to take of the valve covers to make sure everything is right but ran out of time. thats the next job on my days of.
i dint get the crank balaced due to the motor been in the car still.
thanks for your help guys
bad
Member
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Joined: Oct 2009
Posts: 405
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From: Mountlake Terrace, Wa
Car: 86 Iroc + 83 Firebird
Engine: Iroc 305 TPI, Firebird 305 4bbl
Transmission: 700r4 in both.
Axle/Gears: Iroc 3.27 Firebird 3.23
Re: new crank, now funny firing
yeah i agree with infernal, id check the firing order to start off with. sounds completely dumb, buy hey were only human. i bet we all messed that up at least once, if not more. if its fuel injected, there should be 2 10amp fuses as well.
Thread Starter
Junior Member
Joined: Feb 2010
Posts: 89
Likes: 0
From: england
Car: 89 gta
Engine: 5.7 supercharged
Re: new crank, now funny firing
hummmm good point about the fues!!l i removed them when i first turned the motor over to get the oil psi up. i wounder if one aint in right. theres fule in there you can smell it and its back firing but if its not on both sides????? hummm well worth a look.
thanks bud
bad
thanks bud
bad
Thread Starter
Junior Member
Joined: Feb 2010
Posts: 89
Likes: 0
From: england
Car: 89 gta
Engine: 5.7 supercharged
Re: new crank, now funny firing
right had a little bit more of a play and am now thinking one side of the injectors are not firing. iv been reading about what would do this, the pules wire problem. but how do fix it?????
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