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Followup To
Question - van i mostly work out of the country central and south america anyway where is the sgr valve andd is it cleanable or do i need to replace it thanx for the quick and accurate reply ron
could u please give me the firing order of a chevy 454 if possible also which is # 1 cylinder
a pic could be worth a thousand words reason is i'm doing a tune up and suspect that wires were not insatalled properly, and engine was running ruff i know firing order is on the intake mainifold but i cant read it, it's an 1989 chev and i don't have a book ,i know this sounds like a dumb question but i work on aircraft not cars
thanx alot ron
Answer -
Uhhhh, what airline do you work for?
Just kidding.
1-8-4-3-6-5-7-2
Left bank-front to rear= 1-3-5-7
Right bank-front to rear= 2-4-6-8
Distributor rotation clockwise
#1 plug wire almost directly toward front...slightly counterclockwise , or toward left front corner on distributor cap.
A manual can be looked at in the public library, refference section.
Also, most parts stores will let you look.
Check for vacuum leaks, and a dirty EGR valve.
Good luck,
Van
AnswerThe EGR valve is usually on the intake manifold, or plenum, and connects the exhaust system to the intake.
They are all removable, and cleanable. It is actually a recommended scheduled maintenance item, and some vehicles have a service engine light come on at certain mileage intervals to remind you to do it.
Van
