how does milling the cylinder head affect the valve timing??

cre · 03-31-2011, 12:56 AM

If it's bogging under ~4KRPM then check all the vacuum plumbing under the intake plenum. A problem with the ACIS system will cause sluggishness at lower RPM.

Yes, 10?BTDC with the diagnostic jumper in place.

My88isGREAT · 03-31-2011, 01:49 AM

supracabra, did you set the cam position sensor back to where it needs to be when the motor is TDC before you installed it? Sounds like something simple that your missing. You don't need to jumper anything to check timing, just hook up timing light to #6 plug and see if it is running at 10 before TDC

cre · 03-31-2011, 05:29 AM

Quote:

Originally Posted by My88isGREAT

You don't need to jumper anything to check timing, just hook up timing light to #6 plug and see if it is running at 10 before TDC

You're wrong... On both counts. You can only use #6 on the GTE for timing as it runs a wasted spark setup, not so on the GE; You MUST have the engine at normal operating temperatures, no critical diagnostic codes present, and you must jumper TE1 and E1 so the ECU does not adjust the ignition timing and sticks to the programmed map explicitly.

03-31-2011, 12:56 AM	#1
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	If it's bogging under ~4KRPM then check all the vacuum plumbing under the intake plenum. A problem with the ACIS system will cause sluggishness at lower RPM. Yes, 10?BTDC with the diagnostic jumper in place. __________________ If something breaks or you need to contact a member of the administration please post HERE. Unless it's a private or administration matter please post it on the forum. It benefits no one else if car related questions aren't posted for future users and takes away from the time I'm able to spend helping on the rest of the forum. If you're so inclined I'm always more than happy to accept tips via PayPal. Tip Jar --->

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03-31-2011, 01:49 AM	#2
My88isGREAT Stock Join Date: Mar 2011 Location: somewhere Posts: 15	supracabra, did you set the cam position sensor back to where it needs to be when the motor is TDC before you installed it? Sounds like something simple that your missing. You don't need to jumper anything to check timing, just hook up timing light to #6 plug and see if it is running at 10 before TDC