Hello, I need a bit of help , Please.
Ive got a HD 82 Suburban Chevy 350 M engine. over 200k miles on it. I dont drive it but maybe 1-2000 miles a year. Idles been dropping down and gas milage getting worse. And when its hot sitting at a light the engine shakes .But not stalls. I honestly think I ws getting about 5-6 mpg. So I checked the timing and it was retarded. And the vacuumn advance hose was split , and another hose too. Ive got it set and the truck runs better then since I got it. But its not a steady timing. It moves a bit down and up about 5 degrees , every 5 seconds. so I bumped it up a bit to a normal 350 setting , and its fine driving around. Real fine. The truck is shifting smoother, and really responsive, and the gas pedal doesnt need to be held down as far. i didnt have to adjust the idle or anything. Its not spark knocking and it accelerates real fast. Im concerned that the chain is sloppy and may break. Is there any way to tell if the chains worn to far without changing it. .
Ive got a 400 mile camping trip coming up and want to drive it as is. If it wont break.
Thanks.