chugging and sputtering when accellerating

[$ Big C $ 10+ year member]

Had a nissan in doing the same thing, check your fuel pressure.

 

[motox_727 10+ year member]

get some mistery oil and run it through your motor a few times it should clear it up

 

[jdc753 10+ year member]

Seems to be a bump on an old thread but to me it sounds similar to a fuel delivery problem. O2 sensor could cause that or dirty injectors, dirt fuel filter, bad fuel pickup. Cars got some miles on it so O2 sensor sounds reasonable and when was the last time the fuel filter was changed. I got a 83 F250 with a straight six and 4 speed, the jets in the carb were bad (crappy rebuild) and would leak fuel into the carb instead of metering it like normal. This made it want to fall flat on its face if you tried to accelerate too hard from a stop. I would say driveability wise see if it works fine if you go really easy on the throttle and if you can stall it out by just stabbing the gas from a stop.

 

[Th3pWn3r 10+ year member]

Wow...the advice given has been pretty retarded for the most part lol. Especially the mystery oil idea. Anyhow, on top of all the things mentioned in this thread I can't believe that nobody has mentioned to check to see if your catalytic converter is "blown out" or clogged, the cat if clogged will cause the symptoms you're having. You can try running with the cat disconnected and see how it runs(Illegal in some states,possibly all) and if it runs fine you know that's your problem. You can also try banging or tapping it with your hand and listen for stuff rattling around inside. The extreme back-pressure this would put on your engine would definitely cause it to run poorly. Had this problem on my 89 Camaro Z28 back in the day.

 

[ThatChevyGuy 5,000+ posts]

I think this is whats wrong with mine. When i floor it i smell rotten eggs. And fish.

 

[audioatg 10+ year member]

Wow...the advice given has been pretty retarded for the most part lol. Especially the mystery oil idea. Anyhow, on top of all the things mentioned in this thread I can't believe that nobody has mentioned to check to see if your catalytic converter is "blown out" or clogged, the cat if clogged will cause the symptoms you're having. You can try running with the cat disconnected and see how it runs(Illegal in some states,possibly all) and if it runs fine you know that's your problem. You can also try banging or tapping it with your hand and listen for stuff rattling around inside. The extreme back-pressure this would put on your engine would definitely cause it to run poorly. Had this problem on my 89 Camaro Z28 back in the day.

lmao . Why is it that some one out of the blue comes out and says everyone else is stupid like this. Kids these days.

 

[ThatChevyGuy 5,000+ posts]

Theses.

That is allses.

 

[Th3pWn3r 10+ year member]

lmao . Why is it that some one out of the blue comes out and says everyone else is stupid like this. Kids these days.

You really need to learn how to read. Where did I say that everyone is stupid? I said there's been a lot of retarded advice but I didn't say everyone is stupid. You're right, I'm a kid, oh no, it's the end of my life because you called me a kid. Grow up, what are you 50 years old living at home with your parents still lurking and trolling websites in an attempt to make a "kid" feel bad? I'm 23 and I'm glad that I'm not old or even elderly such as someone like yourself.

By the way, to the original poster, have you figured out the problem or fixed it?

 

[jdawg 5,000+ posts]

the very first thing I would have done is run codes before throw parts at the car http://www.obd-codes.com/faq/read-gm-2-digit-obd-codes-free.php

 

[dman4486 5,000+ posts]

run the codes, and then remove and clean your egr valve....I had this issue with another make/model and egr never opened causing the cold motor to run like A$$

 

[jdawg 5,000+ posts]

I had a similar in a 90 caprice. Ran codes doing the paper clip thing and nothing. Turned out the turn down under the back bumper was crushed like half way shut from pulling into gas stations and such. My car was lowered like 3".

 

[HK93GMC 10+ year member]

pull plug wires off of coil packs and check for rust on post or up in wire boot, also could be a semi-clogged converter

 

[youngcoke]

if you smell eggs that means you need a new catalytic converter . and check your fuel filter

 

[Joseph M 10+ year member]

How about spark plug wires? have you changed those? i heard you changed the spark plugs, but the wires could be bad?

 

[mapolley07 10+ year member]

Bumping my old thread, but my car is still hesitating when I accellerate from a stop. I have newer spark plugs, new air filter, new fuel filter, oil change 1k miles ago, and catalytic converter was removed before I even bought the car.

Anyway, I did the paperclip trick to read the OBD-1 codes and got codes 13 and 14 which are O2 sensor and Coolant Temp Sensors reading bad voltages. should replacing these fix the problem?