'89 3VZE mis-fire
#1
'89 3VZE mis-fire
Newb here looking for some input on getting rid of a misfire so I can pass smog test. Just did a valve job on my new to me '89 3vze . Complete head rebuilds, all new exhaust valves, re-manufactured fuel injectors, timing belt, cap, rotor, plugs, etc. Ignition timing is at 10 degrees. Runs surprisingly well. Idle test is good but has a bad no load misfire starting at about 2,025 RPM. All good up to 2,000 and runs fine with a load on it at all RPM's. No ecu fault codes. High speed smog test requires 2,200 RPM minimum.
Noticed today that the mis-fire does not occur unless the motor is fully warmed up. Also found after I shut it off for 15-20 minutes it did not have the mis-fire. Seem to only be when it fully warmed up. Any ideas?
The only thing I'm questioning is if a vacuum hose is possibly connected wrong at the intake manifold for the cluster f of switching valves on the passenger side fender. Connected them all back how the were but could have been wrong from the get go. Can't find a solid vacuum diagram for the '89. The only '89 FSM I can get my hands on only covers the 22R.
Any suggestions?
Noticed today that the mis-fire does not occur unless the motor is fully warmed up. Also found after I shut it off for 15-20 minutes it did not have the mis-fire. Seem to only be when it fully warmed up. Any ideas?
The only thing I'm questioning is if a vacuum hose is possibly connected wrong at the intake manifold for the cluster f of switching valves on the passenger side fender. Connected them all back how the were but could have been wrong from the get go. Can't find a solid vacuum diagram for the '89. The only '89 FSM I can get my hands on only covers the 22R.
Any suggestions?
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