engine-4.3 v-6 with 100,000 miles
2006-11-12 03:02:27 · 6 answers · asked by irace71x 2 in Cars & Transportation ➔ Maintenance & Repairs
Tune up?
2006-11-12 03:05:08 · answer #1 · answered by Silverstang 7 · 0⤊ 1⤋
You should have your exhaust system checked out. If you are smelling fumes that much I am pretty sure you have a leak. Some exhaust leaks are easily repairable but some are a pain in the butt. Put it this way if you need to replace your exhaust manifold gasket or the exhaust do-nuts that are in-between your manifold and your pipe on each side you will need to have or rent an acetelyne torch to heat up the manifold and exhaust nuts. Your vehicle being older they become brittle and rusty over time and will break very easily. As far as your rough idle is concerned just check the obvious starting out like your spark plugs, plug wires, distributor cap, and rotor. If that doesn't solve your problem with the idle then you will need to take it to a shop and have it hooked up to a scanner to diagnose the problem. Hope this advice pointed you in the right direction.
2006-11-12 03:12:36 · answer #2 · answered by guitardan 5 · 0⤊ 0⤋
What it sounds like is a plugged catalyic converter, they plug up quite frequently, what you can do is a couple things, one you can check the catylic converter itself, if its glowing orange or really hot to the touch (compare before and after the cat, shouldn't be an extreme temapture difference) or you can remove the catylic converter (please wait till it cools down) as most GM has two bolts to the exhaust manifold outlet. A rotten smell is a giveaway of a malfunctioning catalyic conveter. If it runs better after removing the cat, get a aftermarket one as they are much better than the factory one if your city requires emmision testing, if not, delete it and put a piece of pipe in between. Then do a tune up on the truck as a missed tune up can cause a catalyic conveter to get plugged with unburned fuel.
2006-11-12 03:12:06 · answer #3 · answered by markie 3 · 1⤊ 0⤋
If it smells like rotten eggs, then you have an issue in the catalytic conversion system. Might be the converter is bad,
or that your engine is running rich.
If you have a cylinder or more that is loafing, maybe due to a fouled spark plug, defective ignition cable, or other ignition defect,
this can show us as a poorly running engine and the unburned fuel can flood the converter, causing an 'air biscuit' smell.
2006-11-12 03:17:31 · answer #4 · answered by hls 6 · 0⤊ 0⤋
Change your spark plugs and wires. If you do it yourself, pull the wire from one plug, change that plug and that wire, then go to the next one. DO NOT take all the wires off at once. They have to go on in a certain sequence.
2006-11-12 03:14:31 · answer #5 · answered by Ridi 2 · 0⤊ 0⤋
Tune-up first, O2 sensor if no change.
2006-11-12 03:26:14 · answer #6 · answered by tvcarvcr2 2 · 0⤊ 0⤋