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Discussion Starter · #1 ·
first time posting on the site. i have expierience with lt1s and camaros and firebirds and stuff...either way im having an issue with this 95 camaro i just bought and was seeking some advise. For uprgrades it seems to have headers and k&n intake... it seems to runs descent at higher speeds(over 40ish), bug chugs aroound a lil bit taking off....changed the plugs and checked wires ok. seems to be getting plenty of gas just feels like a miss...any leads? has been driven in snow(not by me :p)
 

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Thanks buddy. My car is doing the same thing too. Does it feel like when your about to start off it kinda wants to bog down on you? Is it running rich?
 

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Discussion Starter · #6 ·
Thanks so much for your response Brett. Yeah I'm expieriencing exactly what you described. I almost wanna blame the optispark, but that's a $350 delco/delphi unit :p. when I changed the spark plugs they smelled like it was burning rich. It was better after but didn't cure the issue. I'm going to change the wires this weekend even though they look okay I'll let you know how it goes...
 

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It is delco!! I bought it for a back up, I couldn't pass up that price. I have a new summit brand on there now.
 

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You should do some diagnostics before just changing parts at random – that can get costly (although it's not necessarily a bad idea to have a spare opti laying around). Is there any smoke when it's chugging and if so, what color? Have you scanned for codes? There are some big ones that don't light the CEL.

I would start with the things that are easiest to check, like a code scan and testing the fuel system, then move on to ignition issues and data logging. It's difficult to find a place to scan a '95, so some just buy an OBDI compatible scanner and most use Datamaster and purchase the ALDL cable to be able to connect a laptop. For fuel diagnosis, a fuel pressure gauge is necessary and cheap. Ignition components can be checked with a spark tester and by having the ICM brought to you local parts store (bring it hot) that has an ICM tester.
 

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Discussion Starter · #14 ·
Thanks Firehawk for your input, I am getting no codes on the scanner. I did compression test on the motor everything checked out there. the fuel pressure was okay too. there is no smoke when it chugs just burns rich
 

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How did you determine it's running rich? You will usually get a puff of black smoke when you mash it if it's rich. You should also be checking O2 operation and LTFT's in a scanner to verify. Excessively rich conditions will eventually throw a code and light the SEL. A quick check of the vacuum hose at the FPR is a good idea to be sure fuel isn't leaking past the FPR diaphragm and into the vacuum line.
 

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Discussion Starter · #16 ·
this is good stuff. im gonna run more tests tonight and see what i can come up with. first thing is to check that fpr for leaks. i also noticed the fuel lines are spliced together with other ones:p this will be fun....thanks guys
 

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Discussion Starter · #18 ·
got a coule things accomplished yesterday. found that the MAF sensor was on backwards, not sure why or if that makes a huge difference but corrected that. i also had a emssion hose of some kind coming off the intake on the driver side going to towards the brain box, that was broke, replaced the hose and found the right connection.
2 more unresolved issues i also found. i keep smelling gas like its burning rich(unburned gas), so i check the fuel lines, looks janky as hell, but werent leaking, follow it to the fpr, that was leaking at the bottom. i will be replacing that today.
i heard the exhaust spuddering so figured id see what going on. its coming apart where the y-pipe meets the cat, 96000 miles on this car, and i heard the cat making noise, like shakining coins in a coffee can. Is this a bad cat? how will i know for sure?
 

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Discussion Starter · #19 ·
brett running rich can result form many things as small as spark plug wires, o,r a hundred different things. i had a 96 TA that ran rich, check the plugs and one had a hairline crack in it. replaced it and it ran like top. does your oil smell like gas at all?
 

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I agree 100% with firehawk! Trust me this guy knows his stuff.
On another note, I too would also suspect the opti spark. If you have the time, You should clean off your ( o2 ) if it is running rich. They could be reading wrong.
Also (did you get a tune with those headers?) I have heard that its good to get a tune with headers.
 
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