The firing order of any engine should be cast into the intake manifold. Check the manifold for a series of numbers that agrees with the number of cylinders in your engine 1-3-4-2 See http://aarc.epnet.com/application/9081/9081CH2_FIRING_ORDERS.htm Joe, owner 1986 Toyota Pick Up with R22 engine
Which engine?
123456 - 135 passenger side - 246 drives side. clock wise.
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The firing order is nice and simple, 1-2-3-4-5-6
165432 is the firing order.
Engine firing order 1 - 3 - 4 - 2
The firing order for your 1990 Toyota 4 Runner is 1,2,3,4,5,6. Looking at the engine from the front, #1,3 an 5 are on the left, with #1 at the front and #5 at the rear. #2,4, and 6 are on the right with #2 up front and #6 at the rear.
All Dodge V6 engines have a firing order of 1-6-5-4-3-2.
1-8-4-3-6-5-7-2 is the firing order
firing order is1432
the firing order is 1342
1,3,2,4 that is the firing order.