'86 Trans Am - Numerous problems - Page 2

Fit4Demolition · #16 05-16-2007, 10:31 AM

Quote:

Originally Posted by Morley

If the choke light is always on and the choke butterflys are closed after the car is warmed up..the choke is FUBAR.
The accelerator pump can be replaced without a complete rebuild.

the choke is closed when the car starts, and opens when i push the gas a little, and when it warms up the choke opens up all the way. i dont think the problem is with the choke. the air seems to be going in perfectly fine, i think the problem is with the fuel flow. either too little or too much. i dont know if its normal, but when i had my car in the garage after i ran it on the road, when i held the gas down to see how far the rps would drop i saw what i think was a few drops of gas come out of the 4 barrel. is that normal?

Morley · #17 05-16-2007, 11:46 AM

Quote:

Originally Posted by Fit4Demolition

when i held the gas down to see how far the rps would drop i saw what i think was a few drops of gas come out of the 4 barrel. is that normal?

That should be normal. Try holding the secondary's butterflys open and while looking down in the carb, operate the throttle and watch for gas being sprayed down into the carb. There should be a heafty "shot" of gas. If there isn't, the accelerator pump probably has a hole in it and needs to be replaced. The pump is what fives you the extra gas (in 1 big shot) for accelerating. Without that extra shot of gas the engine will fall flat on its face when trying to accelerate.

Fit4Demolition · #18 05-16-2007, 03:11 PM

Quote:

Originally Posted by Morley

That should be normal. Try holding the secondary's butterflys open and while looking down in the carb, operate the throttle and watch for gas being sprayed down into the carb. There should be a heafty "shot" of gas. If there isn't, the accelerator pump probably has a hole in it and needs to be replaced. The pump is what fives you the extra gas (in 1 big shot) for accelerating. Without that extra shot of gas the engine will fall flat on its face when trying to accelerate.

when the car is off and i lift the accelerator pump lever i hear gas being shot into the carberuator so i dont think its bad. im thinking more now than ever that it is the fuel pump. i just hope it isnt too much of a hassle to get it replaced.

Morley · #19 05-17-2007, 01:46 AM

Quote:

Originally Posted by Fit4Demolition

when the car is off and i lift the accelerator pump lever i hear gas being shot into the carberuator so i dont think its bad. im thinking more now than ever that it is the fuel pump. i just hope it isnt too much of a hassle to get it replaced.

It is a mechanical pump bolted onto the side of the block, piece-o-cake to change.

Fit4Demolition · #20 05-19-2007, 01:31 AM

Quote:

Originally Posted by Morley

It is a mechanical pump bolted onto the side of the block, piece-o-cake to change.

yeah it seems like it, thank god for mechanical fuel pumps. the alternative sucks, an expensive pump and a hell of a time to fix. i got my fuel pump today for 15 bucks at pep boys which was great, only i forgot to get a gasket and a strainer if i really need one. is a strainer necessary?

Morley · #21 05-19-2007, 10:40 AM

Quote:

Originally Posted by Fit4Demolition

yeah it seems like it, thank god for mechanical fuel pumps. the alternative sucks, an expensive pump and a hell of a time to fix. i got my fuel pump today for 15 bucks at pep boys which was great, only i forgot to get a gasket and a strainer if i really need one. is a strainer necessary?

Never seen a strainer on a mechanical pump, only on the in tank electric pumps.
The in tank pumps aren't expensive, just a pain to drop the tank to change them.

Fit4Demolition · #22 05-19-2007, 04:07 PM

ive got the old fuel pump off, and i tried to install the new one but the push rod isnt in the retracted position. how do i get it in the retracted position? i took off the distributer cap and cranked the ignition numerous times but the pushrod wont move. what do i do?

knowing my luck when im done installing the new fuel pump, that wouldnt have been the problem and it was the accelerator pump. thats just how optimistic i am about my damn car right now.

Morley · #23 05-19-2007, 06:12 PM

turn the engine over by hand. The pump's pushrod rides on an ecentric built into the camshaft, you need to turn the engine slowly and push in on the push rod at the same time to fnd the "retracted" position.

Fit4Demolition · #24 05-20-2007, 12:11 AM

Quote:

Originally Posted by Morley

turn the engine over by hand. The pump's pushrod rides on an ecentric built into the camshaft, you need to turn the engine slowly and push in on the push rod at the same time to fnd the "retracted" position.

ok, how do you turn the engine over by hand?

Morley · #25 05-20-2007, 12:16 AM

Quote:

Originally Posted by Fit4Demolition

ok, how do you turn the engine over by hand?

5/8" 1/2" drive deep socket with half inch ratchet on the harmonic balancer bolt. turn clockwise (tightening the bolt)

Fit4Demolition · #26 05-20-2007, 12:45 PM

im screwed. yesterday when my dad was working on it when i was at work he tried tapping the push rod in farther, and now we cant get it out. weve been tapping it in farther to see if it will go in to where its supposed to be after cranking the engine but we cant get it all the way. i really want to get it out but the only way to get the push rod to move backwards is to actually start the engine for a second after weve tapped it up as far as it can go. i have a feeling weve really screwed ourselves by forcing it up, but that is really my dad's mistake because hes the one that seized it in the first place. any suggestions on how to get the push rod out or any suggestions on what we should be doing?

i have a good feeling that the pushrod is getting bent from us tapping on it and since we cant get it out, i thought that maybe i could drill into the rod and thread something into it so i could at least get it out, then just buy a new pushrod. im really getting sick of this car, nothing is going right with it. and with my luck i will finally get the fuel pump fixed and that wasnt the problem. i cant wait to get my motorcycle.

Morley · #27 05-20-2007, 06:03 PM

Keep turning the engine over and see if it will dislodge. Then replace it.
Once the rod is free and replaced, coat it with some heavy grease before pushing it up. If it still won't stay up, there is a threaded bolt hole on the front of the engine in line with the rod. It may or may not have an accessory mounted to it but it will have a bolt in it. Use a longer bolt and FINGER tighten it while holding the rod up. The bolt will contact the rod and hold it up. Make sure you replace the original bolt when you have the pump installed

Also, make sure thet the previous owner didn't stick a bolt in there that was/is too long and has trapped the pushrod. The pushrod shouldn't stay up on its own like you describe.

Fit4Demolition · #28 05-20-2007, 10:09 PM

Quote:

Originally Posted by Morley

Keep turning the engine over and see if it will dislodge. Then replace it.
Once the rod is free and replaced, coat it with some heavy grease before pushing it up. If it still won't stay up, there is a threaded bolt hole on the front of the engine in line with the rod. It may or may not have an accessory mounted to it but it will have a bolt in it. Use a longer bolt and FINGER tighten it while holding the rod up. The bolt will contact the rod and hold it up. Make sure you replace the original bolt when you have the pump installed

Also, make sure thet the previous owner didn't stick a bolt in there that was/is too long and has trapped the pushrod. The pushrod shouldn't stay up on its own like you describe.

ive turned the engine over a bunch of times and it still wont come out. i think im going to try and drill something into the rod and pull it out that way. i really cant think of a reason why it is stuck. it is really aggravating. any suggestions on getting the rod out? once i deal with that everything else should work fine.

Morley · #29 05-21-2007, 09:11 AM

Quote:

Originally Posted by Fit4Demolition

ive turned the engine over a bunch of times and it still wont come out. i think im going to try and drill something into the rod and pull it out that way. i really cant think of a reason why it is stuck. it is really aggravating. any suggestions on getting the rod out? once i deal with that everything else should work fine.

Drilling the pushrod probably won't do any good since it is hollow and just has the ends pressed on.
Make sure the accessory bolt I mentioned above isn't too long and pinching the pushrod. If it is, that could have been your fuel delivery problem all along.

Fit4Demolition · #30 06-16-2007, 12:24 PM

Quote:

Originally Posted by Morley

Drilling the pushrod probably won't do any good since it is hollow and just has the ends pressed on.
Make sure the accessory bolt I mentioned above isn't too long and pinching the pushrod. If it is, that could have been your fuel delivery problem all along.

where exactly is this accessory bolt? should i be able to get it out from underneath the car or from the top?

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