Missing, Knock CEL, Hesitation ~1800-2400RPM
05-23-2017, 03:07 PM
#21
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Did you jumper the test plug when you did your timing? Timing should not be moving around that much when jumpered. With the test connector in you want 5 degrees BTDC. But if you are at 5 without the test connector in the timing is retarded much to far. Should read around 12 in normal idle operation (un-jumpered) but that can vary.
A friends truck behaved this way when the timing was way off, like ATDC. Turned out we had a bad timing light.
The vac hose off the dashpot is normally connected to a tiny air filter. It should not have actual vacuum on it.
A friends truck behaved this way when the timing was way off, like ATDC. Turned out we had a bad timing light.
The vac hose off the dashpot is normally connected to a tiny air filter. It should not have actual vacuum on it.
05-23-2017, 03:20 PM
#22
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Did you jumper the test plug when you did your timing? Timing should not be moving around that much when jumpered. With the test connector in you want 5 degrees BTDC. But if you are at 5 without the test connector in the timing is retarded much to far. Should read around 12 in normal idle operation (un-jumpered) but that can vary.
A friends truck behaved this way when the timing was way off, like ATDC. Turned out we had a bad timing light.
The vac hose off the dashpot is normally connected to a tiny air filter. It should not have actual vacuum on it.
A friends truck behaved this way when the timing was way off, like ATDC. Turned out we had a bad timing light.
The vac hose off the dashpot is normally connected to a tiny air filter. It should not have actual vacuum on it.
If you take a look at my latest pictures.. I'm replacing my injectors this week. If that doesn't fix the issue I'm not sure what I'll check next. :/
05-23-2017, 06:06 PM
#24
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Wish there was someone nearby that had a clue how to do it.. because it's outside my skill set. Any idea what that bottom connector is for? I know the wire would be impossible to tell me.. but the connector seems fairly unique.
05-24-2017, 08:22 AM
#25
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Hmm i wonder if your total advance is messed up? Have you looked at timing without the connector in? I have heard there are a lot of early ECUs that advanced way too far and cause the miss you speak of.
That's a tough one on the wiring. Mine has some extra A/C wires hanging out unconnected, even though my truck never had factory A/C.
That's a tough one on the wiring. Mine has some extra A/C wires hanging out unconnected, even though my truck never had factory A/C.
05-24-2017, 10:56 PM
#26
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Hmm i wonder if your total advance is messed up? Have you looked at timing without the connector in? I have heard there are a lot of early ECUs that advanced way too far and cause the miss you speak of.
That's a tough one on the wiring. Mine has some extra A/C wires hanging out unconnected, even though my truck never had factory A/C.
That's a tough one on the wiring. Mine has some extra A/C wires hanging out unconnected, even though my truck never had factory A/C.
I put in new injectors today, going to redo the injector connectors. Still trying to figure out what the empty connector is. I think the single wire is for the A/C compressor that it not hooked up.
