Engine unstable after general overhaul

[sarutobi84]

Erratic idling always pair with vacuum lost.

If u have vacuum meter check the vacuum meter.look for erratic vacuum.normally at idle should be -68 to -75kpa when warm up.less than that indicate leak at head,valve.manifold or even tb.

Compression test might do the job also.since your mechanic did install 1 teeth out.valve might hit piston but on honda engine very unlikely to have valve bend.

Last is to send for cam degreing.since yr mechanic skim the head,valve timing is changed a bit.my mechanic advance a bit my ignition when I skim 0.5mm of my head.valve timing and ignition timing is 2 different thing.

yupp. hopefully so
at the time i send for overhaul, my block n head do go to engineering for skimming because suspect both are bent

 

[skyline2m]

I think u should go back to the mech and complain to him about the problem...

the car still haven't out from workshop. Still with the mechanic

---------- Post added at 10:44 AM ---------- 6 hour anti-bump limit - Previous post was at 10:42 AM ----------

Erratic idling always pair with vacuum lost.

If u have vacuum meter check the vacuum meter.look for erratic vacuum.normally at idle should be -68 to -75kpa when warm up.less than that indicate leak at head,valve.manifold or even tb.

Compression test might do the job also.since your mechanic did install 1 teeth out.valve might hit piston but on honda engine very unlikely to have valve bend.

Last is to send for cam degreing.since yr mechanic skim the head,valve timing is changed a bit.my mechanic advance a bit my ignition when I skim 0.5mm of my head.valve timing and ignition timing is 2 different thing.

compression test was made, all piston compression 200psi

---------- Post added at 10:47 AM ---------- 6 hour anti-bump limit - Previous post was at 10:44 AM ----------

anyone got any idea can sms me 0168326248

 

[david ming]

i got sell ignition coil.....and engine part

 

[skyline2m]

Who can solve or experienced before?It is possible the Engine Coolant Temperature (ECT) sensor?