Very high idle, High idle Options

[sbruzek]

My 1973 2.0 has a very, very high idle. 30000, even higher to 50000, if you disconnect vacuum hose at aux air looking for a leak, or stuck. Only thing that lowers idles down a little, to 25000 or so, is disconnecting vacuum line to the pressure sensor. Pulling off any vacuum lines and plugging them don’t lower the idle any.

This started after I replaced one leaking fuel injector. I did put on new seals with the new and old injector on that side. All the vacuum lines are new and vacuum is very good and strong on all vacuum lines. Pressure sensor holds a vacuum fine.

Any suggestions?

I did set timing to red mark per manual as I noticed distributor moved a bit when working. It was a bit loose so I set timing and tighten distributor down good. But had to set timing at 25000 rpm as I could not get it any lower at correct timing marks.
I do have an oil leak at the oil cooler seals that is getting worse. Is that a vacuum leak?
Starts up great and runs good just have a crazy high idle.

Steve B

[dr914@autoatlanta.com]

you have knocked off or broken a vacuum line or fitting, or the throttle is stuck. Removing the pressure sensor line just richens it up excessively drowning the engine and lowering the idle.
It is a simple problem though

quote name='sbruzek' date='Feb 5 2020, 02:38 PM' post='2783404']
My 1973 2.0 has a very, very high idle. 30000, even higher to 50000, if you disconnect vacuum hose at aux air looking for a leak, or stuck. Only thing that lowers idles down a little, to 25000 or so, is disconnecting vacuum line to the pressure sensor. Pulling off any vacuum lines and plugging them don’t lower the idle any.

This started after I replaced one leaking fuel injector. I did put on new seals with the new and old injector on that side. All the vacuum lines are new and vacuum is very good and strong on all vacuum lines. Pressure sensor holds a vacuum fine.

Any suggestions?

I did set timing to red mark per manual as I noticed distributor moved a bit when working. It was a bit loose so I set timing and tighten distributor down good. But had to set timing at 25000 rpm as I could not get it any lower at correct timing marks.
I do have an oil leak at the oil cooler seals that is getting worse. Is that a vacuum leak?
Starts up great and runs good just have a crazy high idle.

Steve B
[/quote]

[ctc911ctc]

Are those number in metric units? Seems that there is an extra zero??? (IMG:style_emoticons/default/poke.gif)

(IMG:style_emoticons/default/smile.gif)



[quote name='dr914@autoatlanta.com' date='Feb 6 2020, 10:31 AM' post='2783568']
you have knocked off or broken a vacuum line or fitting, or the throttle is stuck. Removing the pressure sensor line just richens it up excessively drowning the engine and lowering the idle.
It is a simple problem though

quote name='sbruzek' date='Feb 5 2020, 02:38 PM' post='2783404']
My 1973 2.0 has a very, very high idle. 30000, even higher to 50000, if you disconnect vacuum hose at aux air looking for a leak, or stuck. Only thing that lowers idles down a little, to 25000 or so, is disconnecting vacuum line to the pressure sensor. Pulling off any vacuum lines and plugging them don’t lower the idle any.

This started after I replaced one leaking fuel injector. I did put on new seals with the new and old injector on that side. All the vacuum lines are new and vacuum is very good and strong on all vacuum lines. Pressure sensor holds a vacuum fine.

Any suggestions?

I did set timing to red mark per manual as I noticed distributor moved a bit when working. It was a bit loose so I set timing and tighten distributor down good. But had to set timing at 25000 rpm as I could not get it any lower at correct timing marks.
I do have an oil leak at the oil cooler seals that is getting worse. Is that a vacuum leak?
Starts up great and runs good just have a crazy high idle.

Steve B
[/quote]
[/quote]

[sbruzek]

[quote name='ctc911ctc' date='Feb 6 2020, 10:11 AM' post='2783578']
Are those number in metric units? Seems that there is an extra zero??? (IMG:style_emoticons/default/poke.gif)

(IMG:style_emoticons/default/smile.gif)

Yes I got carried away a bit. Sorry about that. Idle is fixed. It was due to a leak at one of the fuel injectors.

Thanx


[quote name='dr914@autoatlanta.com' date='Feb 6 2020, 10:31 AM' post='2783568']
you have knocked off or broken a vacuum line or fitting, or the throttle is stuck. Removing the pressure sensor line just richens it up excessively drowning the engine and lowering the idle.
It is a simple problem though

quote name='sbruzek' date='Feb 5 2020, 02:38 PM' post='2783404']
My 1973 2.0 has a very, very high idle. 30000, even higher to 50000, if you disconnect vacuum hose at aux air looking for a leak, or stuck. Only thing that lowers idles down a little, to 25000 or so, is disconnecting vacuum line to the pressure sensor. Pulling off any vacuum lines and plugging them don’t lower the idle any.

This started after I replaced one leaking fuel injector. I did put on new seals with the new and old injector on that side. All the vacuum lines are new and vacuum is very good and strong on all vacuum lines. Pressure sensor holds a vacuum fine.

Any suggestions?

I did set timing to red mark per manual as I noticed distributor moved a bit when working. It was a bit loose so I set timing and tighten distributor down good. But had to set timing at 25000 rpm as I could not get it any lower at correct timing marks.
I do have an oil leak at the oil cooler seals that is getting worse. Is that a vacuum leak?
Starts up great and runs good just have a crazy high idle.

Steve B
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