My new (to me) 1989 Suburban 4X4, 5.7 gas, 295,000 km. has to go in for an e-test on Monday; needs to pass before I can licence it. It apppears to run clean. I've replaced the PVC valve, changed the oil, changed the air filter. I'm running a tank of gas through it with an additive ("Guaranteed To Pass"), and I will put a tank of high test ethanol blend in it for the test. I will run it good and hot before the test. I'll also change the plugs. Anyone have any other suggestions. Thanks; Keith.
- posted
19 years ago