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G60 surging idle after head gasket replacement, now won't start, help!

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Austin_85'MKII

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Discussion starter · #1 ·
just got done doing the head gasket on my g60. the car started and was had a surging idle. realized the cam timing was off by 1 tooth.
anyway, i timed it properly and the car ran smoother but i noticed that i had a vacuum leak somewhere still.
i saw that the ecu line was unplugged from the tb so i plugged it in and the car wont start.
it wont start now with it unplugged either. i dont know what i did.

this doesnt make any sense. help please:heart:
 
#6 ·
Yeah, there are three wires. Two are brown and one is brown with a white stripe IIRC. Tried moving them once, it did not work out so well... Two of them are on 1 ring connector and the other is by itself.
 
Discussion starter · #7 ·
crazynorweegian said:
Yeah, there are three wires. Two are brown and one is brown with a white stripe IIRC. Tried moving them once, it did not work out so well... Two of them are on 1 ring connector and the other is by itself.
Click to expand...
thanks ill go take a look.
and i got the car to start with the cts' in the correct places. just took me pumping the gas to get it started. (which im not used to :D)
it idle'd fine, but it seems that i have a vacuum leak some where!?? :banghead:
 
#11 ·
LOL, should not be 0 dude. You have a huge vacuum leak. Mine reads like 15-18 Hg-in vacuum at idle. That means it is reading the atmosphere and not your manifold pressure. Something that significant is going to be more than a small diameter vacuum hose, I believe. Check the ISV hoses, any vacuum plugs you have, then move on to the boost tubes and all of the sensors and junk that hook up to them.
 
#14 ·
A short ECU hose would not affect vacuum. That tip on the ISV is a good one. If you have a reroute it probably would not matter as much though if I am imagining it correctly. How about the cluster? Did you remove the hose from there?
 
#15 ·
I would have replaced the blue CTS, retimed the car, and checked for obvious vacuum leaks. Could have been driving it in the time this thread got posted. :banghead::banghead:

Obvious issue is obvious.
 
#16 ·
TheBurninator said:
I would have replaced the blue CTS, retimed the car, and checked for obvious vacuum leaks. Could have been driving it in the time this thread got posted. :banghead::banghead:

Obvious issue is obvious.
Click to expand...
Which is why you respond to threads and don't start them.
 
#18 · (Edited)
those grounds you are talking about, I believe those grounds are for the ecu. make sure they are intact and tight.



oh if you are up and running with a rough idle, and vac gauge reads zero...

when you reset your cam timing did you crank the motor by the cam sprocket or the crank. my car did exactly that when my crank keyway stripped....
 
#19 ·
corradokyd said:
those grounds you are talking about, I believe those grounds are for the ecu. make sure they are intact and tight.
Click to expand...
Still not going to cause a vacuum leak....

Austin_85'MKII said:
if i cap off both ends of the isv, and adjust the idle screw, will that rule out the problem with the isv?
Click to expand...
Nope, not how it is done. Probably should search on that one dude. You blow on the side and take an allen to turn the adjustment screw on the other hole until the air flow is 99% eliminated. Check your idle screw/ o ring too.
 
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Austin_85'MKII
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