Q: my 1991 camaro v6 is getting spark and fuel but wont start

asked by on December 02, 2016

my 1991 camaro v6 is getting spark and fuel but wont start. My uncle and I tried replacing the fuel injectors, checking the ECU, checking the fuse box, and checking the firing order of the pistons, and giving it new gas and oil. It will make a slow weak reving noise then it chokes itself out after about 10 seconds of making the noise . We tried spraying starter fluid directly into the intake and it improved the noise. It made a slightly stronger and slightly faster reving noise. But all that still didn't fix it. We are lost on what to do now.

My car has 123260 miles.
My car has an automatic transmission.

If the EGR valve is stuck open or there is a large vacuum leak(s), that could cause the problem you are having. A severe restriction in the exhaust system could cause this issue. You’ll also want to check to be sure a worn timing chain hasn’t jumped. If you check all "external engine" possibilities and you can’t get it to run, you’ll have to check the chain and timing marks to be sure everything lines up. A cylinder compression test can "indirectly" indicate if valve timing is way off. As far as fuel, you’ll want to check actual fuel pressure on the rail as you could have lower than required pressure due to a faulty regulator, pump, and/or clogged fuel filter. Also, your engine may have a cold start injector, cold start injector time switch, and/or a coolant temperature sensor, all designed to get the engine running initially by adjusting the air fuel ratio for cold operation. If any of these components are faulty, that could explain it. In any event, if you want a quick solution, a certified Mechanic could perform a no-start diagnostic and get the root cause identified quickly, letting you know of the required repair and cost.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Car cranking problem being a bad fuse box?

Fuse boxes can and do go bad every once in a while. While it is rather rare, it is not unheard of. If there has been any sort of damage in the area, these are more likely to fail. The...

My truck will not start - 2005 Ford Expedition

The starter on the truck may have burned out from the repeated jumping of the weak battery. This will cause the voltage to the starter to be low and overheat the starter when you try to turn it over multiple...

U1262 scp data link fault

The code U1262 point out a communication fault between the vehicle modules and a scanner. It may be best to visit your local dealer to find if one of the vehicles control modules has failed. In some cases this can...

Related articles

Industry News for Automotive Techs: October 8-14
50 MPG Chevrolet Cruz Diesel, Mazda's G-Vectoring drive system, Uber and Volvo collaborate on autonomous cars, and Hubb's new reusable oil filter.
2012 Toyota Prius vs. 2012 Chevrolet Volt: Which One Should I Buy?
While these two vehicles are both certainly cost-effective to drive, they can be difficult to compare due to the Prius’ entry in the mid-size category and the Volt living squarely in the compact car category. Both of these vehicles are...
The Best Used Cars to Buy if You're Hauling a Horse Trailer
Horse Horse owners need a vehicle with towing capacity. Depending on the size of your trailer and the weight of your horse or horses, you probably won’t be able to get away with less than a 3,000-pound towing capacity, and...