About Van Expertise I can answer most questions concerning 4X4 engine, drive line, suspension, electrical, and fuel, both diesel and gasoline.
Ford, GM, and Dodge, old and new.
Experience I have been maintaining a fleet of approximately 55 light, medium and heavy vehicles for over 20 years. Most are 4X4 pickups and off road fire fighting trucks. Some vans, wagons, sport utility, and personnel transport vehicles. Diesel and gas. Major and minor repairs due to extremely severe duty.
Question how can i check the timing on my 1990 buick skylark 2.5 4cyl.it has a dis system. i have replaced the icm,coil,wires,andplugs it still will not start. i thought that if i checked the timing i could diagnos the problem but i don't know how to check the timing on this dis systenm
Answer Hi Ed,
There is no real timing adjustment other than base timing when the engine is rebuilt.
I need to ask if there is any spark at all.
Assuming there is power to the ignition, and no spark, I would make sure the cam shaft is turning, and then check the crankshaft position sensor. You need a signal from it to create spark.
WWW.autozone.com has service literature free online. Just enter your vehicle information, and check it out.
