Bad gas..

White smoke out the tailpipe means one thing: coolant is burning. Either a cracked head gasket, cracked head or a cracked block.

Have you run a compression test on all six cylinders yet?

Doc

Hmmmm ... sounds slightly familiar Dan. Check my recent thread on alt.autos.4x4.chevy-truck titled "Did I ruin my engine ???" I recommend you get rid of that gas as soon as possible.

Mike

scribbled:

I did it back when my mechanic said it had no compression, and they each had compression within 5 of what is "required". saying it's white smoke was kind of miss-leading on my part. It's more grey and blackish than white like what I implied. sorry about the confusion

Mike McAuley scribbled:

thanks, I checked it, and I'm hoping thats what the problem is. As usual, I didn't include a little caveat in my previous post.

when I took out the bad gas before (it was probably 12 month old gas then) it made a HUGE difference in the smoke amount.

Blazer Fan Dan scribbled:

just another stupid question:

would bad gas cause:

a: the truck to run spotty and jerky going forward but still fine in reverse?

b: to puff out dirty brown and grey smoke when I pump the gas?

c: run rough

I know that, most likely, I just have a case of "hey dan, just get new gas you idiot" going here, but I'm just wondering why I can back up perfectly fine, but going forward jerky and spotty.

now if I can just get my brakes to quit clunking and sticking, i might be able to get this truck out onthe streets.

Inline.........................

Yes, as you're giving it way less pedal in reverse + you have a really short reverse gear, placing less load on the engine.

Yup.

Yup.

Just drain the tank, blow out the lines, fill her up with premium and a fuel system cleaner and be on your way.

Doc

scribbled:

thanks, I just wnted to make sure what my own hypothesis was (based a lot on what ive heard on here from my earlier carb/bad gas fiasco) was logical.

my sister is visiting, so I need an excuse to be away from her, so now i have it.