Im new to this site so im not to sure how to go about this.

Trouble started when I had to park my car for about 2 months. It was never started during that whole time. I go to start it back up and It didnt want to Idle what so ever. I had to play with the gas until the engine warmed up considerably. After the idle speed steadied I tried to move the car and it dies on me. I dont know much about cars but I do know Alittle. I first thought it was something to do with bad sparkplugs or wires. So I checked those and they seemed fine. So I moved to vacum lines. None of those were bad. Its a 305 tbi. btw. So i moved to fuel lines. I changed the fuel filter and it didnt help. I was worried it was the fuel pump. But im getting the right pressure from there. Now im totally stumped on what to do with the car.

Alittle more on what it does. When I first start the car it wont idle at all. I play with the gas until it warms up. Then when I put the car in gear it wont die but the rpms will drop hard. Then when i give the car gas it will die, unless I let off the gas as soon as I press it. When I let off the gas it the whole car will jump and start moving. After doing that for awhile when I get the rpms up, I can press on the gas consitently but it has no torque at all. Then when it shifts to a higher gear it will try to die again.

So if anybody has an idea of what I can do?

 

Might be some bad gasoline after sitting so long - I'd add a bottle of "dry-gas" or some other water remover into the gas tank and top of the tank with fresh fuel.

 

Agreed, although not sure I can see gas going bad after 2 months, but it's where I'd start.

I can't think of anything else that could have changed while the car was sitting though.

 

Yeah. I did that first day. And after the gas was gone i did it again just incase. I was working on it today and I now believe im probably heading for a new Engine instead. I had the engine reved for just a bit, I had a friend with me and he told me to shut the car down. I had fire coming out of the tailpipes. And the exhaust pipe was red from the Cconverter on. So youd think its clogged. But. I had the converter off once this week and it was doing the same thing. So i checked the compression in the clyenders and the number 8 was only at 86psi. I dont know if this would cause a fire but thats worrying me a bit. Im thinking im just gonna buy a new block and start over with a new motor. But if anybody has anyideas of what that could be?

 

Hold on a second, don't jump to conclusions here, it could be extremely simple.

Check your plug wires REALLY good. Take each one off, inspect it. Bend it back and forth and look for cracking, or a charred/melted area. What it sounds like to me is one of your wires burnt through.

What would happen in that scenario, is the gas would run straight thru the motor, unburnt because the cylinder is not sparking. When it gets to the REALLY HOT exhaust manifold, it explodes, causing a backfire, and some nasty vibrations. The majority of vibration though comes from the fact that you are only running on 7 cylinders. The fact that your tailpipes caught fire makes me suspect further that this is true, because that gas is getting pushed all the way to the tailpipes, and if one shot of gas decides to ignite, it will ignite all the remaining gas in the exhaust.

Just check them or replace them with a set of 18$ valucraft ones to see. Besides, you can always take them back if it doesnt work, and get a refund.

Get back to us

 

#8 cylinder is also the most common one to foul plugs and have excess carbon build-up in it in the older v-8's it could also have burnt valve letting gas to go through and burn in exhaust/if you were concidering replaceing engine with another 305 then don't do it,it would be better to dig into this motor and find problem instead.don't forget when you do get it running right you will need to replace converter and o2 sensors due to fire in exhaust--- with the no idle when first started could also be idle air control motor on tb also common malfunction on these/not sure how all these problems could happen at once you may just have rotten luck

 

Maybe a stuck injector. Ever watch the throttle body while the car is running?

 

Unfortunatly I already put 300 dollars worth of parts onto the car. I put accel 8mm wires, bosch plugs, performance distributor cap, and a new distributor itself. Somebody said something about the air control. Im gonna have it towed to a shop soon, bc i havent found anything that i can see. So im having the computer tested next. If all else fails. I just so happen to have a 305 block that ive been wanting to throw a stroker kit in. Im thinking a 327 would look nice in the car. But thats later. Somebody told me the fuel could be to lean. Im not sure though. I checked the fuel pressure on it. I have the right amount. Oh and the injectors. I took them out and cleaned them. So there alright. Ive never ran into problems like this b4 its starting to get agrivating. Could it perhaps be the timing chain itself. I dont know. If the car warms up it will idle normal, and sound like a champ unless i give it gas. I dont hear any ticking or anything.

 

Do those engines have TPS sensors like the TPI?

 

Have you checked the codes? All you need is a paper clip.

How exactly did you clean the injectors?? Spraying them with carb cleaner isn't enough if they have debris in them.

Does not sound like a timing chain issue.

Does not sound lean, hence the fast and furious flames.

Check under the hood at night(dark) for a light show.

 

im thinking it has a tps. Friday im taking it to the shop because all im able to do right now is burn gas trying to figure out the problem.

 

My '91 TPI was doing almost the same thing. Turns out the TPS was bad. If you have one, unplug it and if the car runs good, replace it. It doesn't drive around very well without a TPS, but it will idle pretty good if yours is bad.

 

Well, does anybody think It could be something in the throtle body itself. But im still concerned about the fire problemd I had. I unplugged the throttle position sensor. Nothing happened any diffrent.

 

Try unplugging the MAP sensor. Should be on the pass. side almost next to the T/B.

 

Ok found the problem. Turns out It was the fuel pump. Took it to the shop and they said I had a short in the wires going back. so sometimes I would only get 5pound of pressure to 20 something. So its fixed and all good now. Back to running like a champ. So here in the next few weeks im getting the engine bored out and putting sleeves in. A good strong stroker kit and an ignition system. Thanks for all the Ideas.