Thread: riddle me this
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Old 12-12-2006, 02:00 PM   #4
rnoswal
Lexus & 550's
 
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Well, follow the instructions about using a jumper wire and then try timing the car. Almost all cars have to be adjusted some if the cam position sensor has been moved or the distributor. They both react the same way.


If you can pull a spark plug and screw in the compression guage without the guage, then turn it over until it blows hard out of the hose. You can use a long, narrow screw driver and manually turn the engine over until it is pretty close to TDC.

That should get you in the ball game as far as compression stroke. If the piston is up but at neither time does it blow a low of air out of the hose when the piston is comin up on the compression stroke, then you have your valve timing off and that has to be fixed first.

Just pull the upper timing cover off and when the notch on the crank pulley reaches the 0, the 2 dots for the exhaust and intake grears should line up with the notches on the backing plate behind the gears. If not then it has slipped a tooth or more and may be out of tension or even broken, the belt I mean.

Get the notches lined up with the #1 piston at TDC, then turn the engine over again to make sure it blows hard out on the compression stroke. Then line up the cam position sensor, or distributor and leave it loose while cranking it. If you run out of adjustment then pull it out and rotate it back or forward and try starting it up. You should be able to get it running. If it is backfiring and popping then it is about 180 degrees out so pull the cam postioning sensor, rotate it 180 and try it again. I sounds like timing, but could be cam timing too if that was messed with at all.

Let us know how it goes.

Russ
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