things can never go as planned right lol so I did my 3.4 swap got all back together when I was done found out I had electric issue starter was bad replaced that now my engine will crank but it wont start just cranks and back fires out of exhaust and throttle body. im thinking its a timing problem? if im right how can I fix the problem?
thanks In advance

 

could it be bad timing chain

 

Anyone?? I need some help

 

Check timing. We had that happen to us with an sbc- it wouldn't start for anyone. Then we rotated the dizzy 180 and boom - fired right up

 

The timing chain?

 

I just so confused every thing I look up to adjust timing the car is on my car wont start lol

 

As Alex said, check the distributor to make sure you don't have it 180 degrees off. That's easier to check than pulling the timing cover off. Also, make sure all your plug wires go from the correct spot on the cap to the right cylinder. Since it's popping out the intake, it does sound like you're 180 off, likely on the dizzy.

 

How do I fix the dizzy?

 

Not to sound like a jerk, but do you know how to set timing? You can't just drop the distributor in the engine. It has to point at a certain spot with the #1 cylinder on TDC compression stroke. If you are unfamiliar with it, do a search or check out some YouTube vids on setting distributor timing.

 

Yes ik how to but wat confuses me is it was never removed or changed this just happen out of no where the car was running a week ago

 

OK in your first post, you never stated the engine was running. All you said is you put the 3.4 together and then found out you had issues. We understood it as you were trying to start it for the first time and had this issue.
How was the car running before?
Was there any misfire, hesitation, bucking/jerking, stalling?
Did you put a new chain on before you put it all back together, or is this the original chain?

 

Original chain and it actually ran surprisingly well no jerking. Or backfire was actually pretty smooth

 

THe dizzy hold down can feel tight but sitll allow movement, had to really horse mine down to stop small ammount of movement that made it run great, then like crap.

 

Pull the cap, recheck your timing to make sure it hasn't moved too far off from Cyl 1 on TDC comp.

 

Could the rotor cap it's self be bad

 

Take the plug out of the #1 cylinder. Put your thumb over the hole. Turn the engine over slowly with a breaker bar and socket on the harmonic balancer bolt. When you feel pressure pushing your finger away from the hole you are on the compression stroke.

Then look at the timing mark on the harmonic balancer. It should be close to top dead center (pointer pointing at the mark). Turn it the rest of the way to Top Dead Center.

Then find the number one plug on the distributor cap. Should be the wire to the plug you took out. Unsnap the distributor cap and see if the rotor is pointing towards #1. If it is pointing the opposite direction you are 180 out.

You can find all this in the Haynes manual for your car available at auto parts and book stores.

 

If that was bad, you wouldn't have spark. The cap and rotor are what deliver spark to the plugs. You are getting spark, but it sounds like at the wrong time.

 

Do I took the number one plug out and the #1 cylinder is at tdc. But when I pop the cap off the rotor wasn't at the number one wire

 

4 stroke engine, piston comes to the top twice, make sure its the compression stroke.......

 

Okay I'm still at a loss I made sure the number one piston is at tdc. And the .the rotor is fixed back so it's on the number one plug and the same thing is happening just cranking and backfiring I really wanna figure out wats wrong so I can fix it