Is there an easy way of checking that the variable valve timing is working correctly? My 300TE-24 (3 ltr M104) does not seem to pull any better than my 300TE (3 ltr M103) until about 5000 rpm.
Can I safely unplug the solenoid connector?
Is the timing varied progressively or is it either in or out?
What voltage is applied to the solenoid by the CIS system? I'm wondering if I can rig up a bypass switch for test purposes.
Any help appreciated.
Thanks
Adrian

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90 300TE 24v (M104 eng) 207K miles
87 300TE (M103 eng) 269K miles (and never had the head off!)
86 300TE (M103 eng) 230K+ miles (donor car)
95 Toyota Lucida diesel 4wd
86 200T 165K miles (sold)