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Hi, I have come upon this website after searching for answers pertaining my problem. I have a 1991 toyota sr5 v6 4X4 pu (3.0L) A few days ago i went to turn it on and it wouldnt start, it would turn but not start, I replaced the plugs,distributar cap and rotor. After that the truck would get spark from the wires but still would not turn over. I have checked the fuel pump and lines, it pumps gas fine. I checked the computer which seems to be fine. I have ran out of idea's.
hope you can help me
Jason.
Answer -
Is the problem that the engine cranks when they key is in the start position but does not fire up? The statement"the truck would get spark from the wires but still would not turn over" makes no sense to me, it can't get spark unless the engine is turning over.
If the engine turns over and there is no spark to the spark plugs the problem is either the coil, the igniter or the distributor.
Sorry about that, when the key is in the start posision, the engine will crank but it will not fire. We checked the plug wires while where were trying to start the truck and after we replaced the distributor cap and rotor, along with the ignition coil. it would get the spark to the plugs but it would not fire. Like i said before we also checked the fuel pump and lines... I heard from somone that the timing could be off.
AnswerYes, the timing could be off, possibly because the timing belt may have slipped and jumped a few teeth on the timing gears.
To check the distributor timing make a mark on the case of the distributor where the #1 spark plug contact in the cap is, it should be close to the upper distributor cap screw hole, rotate the engine until it is at zero top dead center on the crankshaft pulley, remove the #1 spark plug and make sure the piston is all the way up, with the crank pulley at the zero mark the rotor should line up with the mark you made earlier, if not remove the front upper timing cover and inspect the timing marks on the cam pulleys, they should be lined up with the marks on the sheet metal plate with the engine at top dead center. If that's not the case the timing belt has slipped and will need to be replaced.
