Her biggest problem is that it is driveable for 10-15 minutes and then it dies and won't start. Parts replaced are fuel pump, fuel filters, and the dreaded TFI Ignition module. The pickup tube in the gas tank was also replaced.
I pulled and cleaned the spark plugs, the distributor cap and rotor and inspected the wires. Compression seems OK over 115PSI with the engine cold at 5500 feet. The timing belt seems healthy and tight. I checked ignition timing with vacuum diconnected; it was right on 10 degrees BTDC. I used my fuel and vacuum tester: fuel pressure was 4.7 PSI. Correct.
WHEN I CHECKED THE IGNITION TIMING I MEASURED VACUUM TO THE DISTRIBUTOR: 0 PSI.
The engine was likely about 100F due to the air temperature. It had only idled a few minutes.
I'm theorizing the lack of vacuum kills distributor vacuum advance and makes the engine struggle to accelerate.
We thought the stalling might be a fuel problem and ran a 4 gas to 1 B-12 solution through the carb.
I lowered the catalytic converter but we haven't done a 15 minute road test to see it that helps.
Thanks for any help. This extended frustration has both of us at the end of our patience. And we are no longer really friends.
Bob Rust Albuquerque, NM 95F and thin air during July
have the same problem?
Sunday, August 26th, 2007 AT 6:14 PM