Firing order is 1-8-4-3-6-5-7-2 clockwise on distributor cap
Driver's side head front to rear are cylinders 1-3-5-7
The other head front to rear..........................2-4-6-8
how do i change the spark plugs on a Chevy silverado 1500
18436572 firing order on chev 265,283,307,327,350 ci
A person must leave the right size gap for the spark plugs when changing them. The 1999 Chevy Suburban has a spark plug gap of .060 inches.
A 2003 Chevy Suburban will crank but not start if it has no spark or fuel. Checking for a clogged fuel filter or fouled spark plugs can help to resolve the problem.
.060
.40 gap
0.035
spell check your answer
ONE AT A TIME.
take it to the dealer
.035
.045