As far as I know, the 1987 Chevrolet G10 Van did not come with a 250 Inline 6 cylinder, and I have never seen one in this year model van. The only 6 installed was the 4.3 liter V6. The firing order of the 4.3 is 1-6-5-4-3-2. There was a 292 Inline 6 cylinder installed in the fullsize pickup that year and the firing order for it and the 250 inline 6 cylinder are the same at 1-5-3-6-2-4.
If it is a Chevy V-8 18436572
The firing order for a 1987 Chevy Celebrity with the 2.5L 4 cylinder engine is: 1 3 4 2
the fireing order is 123456
The firing order should be 1-5-3-6-2-4.
I would like to know the firing order on a 1987 Chevy s-10 pick up with a 4.3 lt. The firing order for that 4.3 V6 is 1, 6, 5, 4, 3, 2.
depends on RPMs
1, 3, 4, 2
18436572
what is the firing order for a 1987 mercury cougar v8
Hi I Own a 1987 Z24 with the same engine your asking about. I also have the GM service repair manual. The firing order is 1-2-3-4-5-6. I hope that helps?!
1-2-3-4-5-6
1,8,4,3,6,5,7,2 1,3,5,7 are on the left bank and 2,4,6,8 are the right bank.