importtuner137

So, it seems to me that my exhaust is plugged when I give my car some gas no air seems to come out the back. I just dismounted the cat and turned it into a big hollow tube. But, after remounting, the exhaust still seems plugged up. I noticed other bulges in the exhaust before the cat, what are those and could they be part of the problem? Also, I spoke with a mechanic and he said to look in the manifold. Some engines according to him might have a cat in the exhaust manifold. Any suggestions?

Also, I just read that it's not normal to have to floor it in order to start your engine. When I turn the key the engine turns at a good speed. But, it won't start unless I floor it. Ever. Any suggestions on this matter would also be of a great help.

One last thing for this post, the drivers side door handle for my car doesn't work, I have to keep the window down so I can open the car from the inside. If anyone has an extra outside door handle that they'd like to sell, that would be great.

Thanks, Kukiri.

P.S. Icemark, you've solved all of my problems so far... So, an extra thank you to you in that.

ramses666

iTrader: (1)

There are three cats - the other two could be bad.

Ramses666

importtuner137

Is there a cat in the exhaust manifold? Or, are all the cats after?

Go48

iTrader: (7)

A little information on the car would help. In any case, I believe you have 2 catalytic converters, so one of the other bulges is probably a cat as well.

Holding the gas pedal to the floor: If you have an S5, i.e., '89-'91, pressing the gas pedal to the floor disables the fuel flow to the engine. So if that's the case, it sounds like the engine may be flooded when you can't start it without pressing on the gas pedal.

For the door problem, you'll have to take the panel off to determine what the problem really is. It may not be the door handle. However, you can pick up door handles on eBay or in the For Sale section of this forum.

importtuner137

Sorry, my car is an '86 GXL, it has two bulges in front of the big cat. The door handle problem is actually the handle part of it. The part you lift up on is broken inside of the door.

And, in reply to the engine being flooded... Even if it sits for a week I have to floor it to get it started, yes that's after I remove and then replace the fuses.

Another thing I forgot to ask about was the jerky engine responce untill the secondary injectors are activated. The car will run and go. But, every couple of seconds it'll lurch forward a bit. then go back to regular performance. AT least for that car.

Thanks again, Kukiri.

kontakt

Those are the "Pre-Cat"s. They are designed to get hot (cats have to get hot to work) before the main cat does to cut back on cold-start emissions. It sounds like one of them may be fubared.

There is not a cat "in" the manifold. The cats in manifold that he referenced are probably a similar system to the 'pre-cat' system on our cars but for a different application. We do not have them.

I'd fix that and see if it helps your engine response. If it does not my first guess is a sticky injector or something along those lines. That is something you'd have to diagnose a bit more. I know my car would occasionally cut out one rotor and kick back in if I was only running on primaries. When I got my injectors back from witchhunter performance, one of them had flowed 0, and I believe that was the one.

Good Luck!
-Whoopie


edit: Also, these cars do not "un-flood" themselves just by sitting for a while like a piston engine will.

importtuner137

Alright, thanks for everything guys. I'll hop under the car and see what I can find. You'll have an update from me within the next couple of days. My car wouldn't be running without your help. So, thanks again!

importtuner137

Alright guys, I've removed the pre cat exhausts and they've both been cleaned out as well. They're both hollow. I tried to start my car to see if it would run better. It still started, but, I still had to floor it. Also, when I tried to start it again it wouldn't start. Any ideas?

ramses666

iTrader: (1)

I would have all 4 injectors professionally cleaned. This is an extremely common problem & get some new injector grommets to replace the old brittle ones as well. You'll have to pull the intake manifolds to get the two primary injectors out. Try some RTV sealant on the manifolds when you put them back together. That would also be a good time to replace all the old brittle vacuum lines while you have the intakes off. This is gonna really be a necessary step to get your car to run properly. Any of these listed things can cause tremendous starting, idleing and running problems. Also check your TPS and once you get it to idle under 1000 rpms you can check the CAS for proper timing.

Ramses666