Wierd Idle

[slightly_red_MA70]

My 88 N/A has developed a wierd idle the last month or so, it sounds like i am running a high degree cam when idling and i have no idea why it is doing that...also, when i shift down and slow down there is a lot of "poping" coming from the exhaust. I dont know if that is linked to the idle problem or if its just cause i have 2.5" straight exhaust(with a cat of course). The motor has 262,000kms on it by the way. Also i am guessing that it is running a little rich

So my question would be.....Why does my supra run like i have high degree cams?

 

[89Joe]

Have you checked the timing?

 

[AJ'S 88NA]

Yup^ What I'd check.

Sounds more like the timing belt has slipped a tooth or two, but I'd check it all.

 

[benchwarmer]

Sounds like you're missing a cylinder at low RPM's. I agree with the above, check the timing and we'll go from there.

 

[nsngarage]

./nod, timing issue most likely

 

[slightly_red_MA70]

sweet thanks, ive got a new timing belt that needs to be put on anyways. the one on there has stretch marks so it most likely did skip

 

[dumbo]

Check for codes, and timing like the above say, both ignition and valve.

 

[Island_Yota]

Mine does it on a hot start up sometimes, like its running on 5cyls, if I rev it to about 2000rpm it goes away completely.

 

[slightly_red_MA70]

so after the car "died" yesterday, i started it up and went driving today, its doing the idle thing really badly its almost stalling at some points, ive adjusted the timing...there is also a loud tick coming from the valve cover, louder than usual...im afraid that my supra might be dying. is it?

 

[AJ'S 88NA]

so after the car "died" yesterday, i started it up and went driving today, its doing the idle thing really badly its almost stalling at some points, ive adjusted the timing...there is also a loud tick coming from the valve cover, louder than usual...im afraid that my supra might be dying. is it?

Did you check the valve timing?

 

[benchwarmer]

Set the crank to TDC on the compression stroke and remove your timing cover. Check to make sure that the marks on the cam gears line up with the marks on the plate.

 

[dumbo]

Suppose a cam cap could be backing out.

 

[slightly_red_MA70]

I set the crank to TDC, checked the cam gears, the exhaust side is fine, the intake side is 1/2 a tooth to 1 tooth out.

i got a picture, i dont know if it shows it very well though

 

[dumbo]

Fix it?

 

[slightly_red_MA70]

Fix it?

I will be very shortly