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Chevrolet Repair/1990 chevy lumina apv tbi 4.3 l firing order

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Question
i need to know th firing order. cylinder positions and distributor positions my van has mixed up plug wires and runs wierd wont even idle

Answer
Hi Steve ... order is 165432. on transverse engine standing on passanger side looking at engine # 1 cyl would be first one on your right toward front of truck. that bank would be 135 inside bank towards firewall would be 246 wires are installed clock wise in the cap starting at roughly the 5 oclock point. in that order #1 then #6 Then #5 and so on. hope this helps

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Robert Summers

Expertise

domestic auto/truck repair, auto body, painting. I currently own a large auto/truck/marine repair shop. 40 years certified 310S,310T,310B in ontario Canada

Experience

40 years certified 310S,310T,310B ontario qualified, 7 years with GM have owned my own shop now for the past 27 years.was automotive marketing director for large auto parts supplier.

Organizations
CFIB (current) past member AARO and APAA.

Education/Credentials
grade 12 plus 2 years college. many aftermarket training courses

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