redfishsc
Tired of fixing lousy engineering.
My 99 C1500 Sub (5.7) occasionally reeks of gas outside the truck (rarely if ever inside). Not the "about to explode" odor of huge amounts of gas vapor, but definitely noticeable after we park it. It seems to be originating from near the fuel tank but I never see any drips, and I never can sniff out the source of it even with the truck running and me crawling around underneath it.
Also..... maybe/maybe not related....... occasionally this truck "surges" when idling and in drive/reverse. About once a week after cranking the truck (with warm engine, it seems) the RPM's will surge from 400-800 up and down, kinda "bouncy". No obvious vacuum leaks to be found. It's enough that you have to hold the brakes a little harder to keep it from creeping. But, if you push the accelerator at all, surging goes away and the truck runs like a champion. Could this be related?
I know I'm throwing an EVAP code, I'll have to double check what the code is. I'm guessing the EVAP code is related, and I'll update later today/tomorrow once I pull that code.
Until then, anyone ever dealt with this?
Brief history, all the gaskets up front (including fuel rail o-rings) are fairly new. Head gasket, upper/lower intake gaskets, and brand new MFI Injectors, as well as new reman cylinder heads and new Enginetech lifters--- all were done about a year ago. Truck idles as slick as glass and runs great other than what I mentioned above.
Also..... maybe/maybe not related....... occasionally this truck "surges" when idling and in drive/reverse. About once a week after cranking the truck (with warm engine, it seems) the RPM's will surge from 400-800 up and down, kinda "bouncy". No obvious vacuum leaks to be found. It's enough that you have to hold the brakes a little harder to keep it from creeping. But, if you push the accelerator at all, surging goes away and the truck runs like a champion. Could this be related?
I know I'm throwing an EVAP code, I'll have to double check what the code is. I'm guessing the EVAP code is related, and I'll update later today/tomorrow once I pull that code.
Until then, anyone ever dealt with this?
Brief history, all the gaskets up front (including fuel rail o-rings) are fairly new. Head gasket, upper/lower intake gaskets, and brand new MFI Injectors, as well as new reman cylinder heads and new Enginetech lifters--- all were done about a year ago. Truck idles as slick as glass and runs great other than what I mentioned above.