There's 7 different gasoline engines and 2 different diesel engine options. You need to give us the engine type first. The most common engine for that model / year is M116.965, which has a firing order of 1-5-4-8-6-3-7-2
I would ask Google.
Remove the tire and wheel from your 1986 Mercedes-Benz 420. Remove the brake pad spring and caliper. Reverse the process to install the new front brake pads.
1986 Pontiac Firebird 2.8 Liter Firing Order
The firing order for a 2.0 L. is 1423.
The firing order is 1-3-4-2
1342
The firing order on a 1986 Chevrolet Celebrity V6 is: 1-2-3-4-5-6.
order is 1,3,4,2
firing order is 1, 3, 4, 2 for a 86' B2000
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18436572
1324