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  View original topic: 1979 vw bus fuel injection 1979 will not restart after warnup
greenbus79 Sun Jun 01, 2025 6:47 pm

engine will not restart after engine warms up.

Wildthings Sun Jun 01, 2025 10:48 pm

Try shorting the wire that goes to the TII sensor on the left head (just forward of the #3 intake runner) to ground and see if it will start.

SGKent Sun Jun 01, 2025 11:33 pm

welcome.

What Mike said.

Three things are needed for an engine to fire

Compression

reasonable air to fuel ratio

Spark

Your job will be to figure first which of the three is missing. What Mike suggested is that if the TSII is bad then the air to fuel mixture will be too far off to fire. But, there could be many issues so you have to look at each one. Checking for spark is an easy first step too.



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