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

[sbruzek]

Wow! I’ve been in the garage since your reply. Thank you so much. Idle is back to normal!

I double checked all the vacuum hose and they were fine.

I pulled out the 2 injectors that I had put new seals on. I replaced the new inner seal “small ones” with the old ones I had kept, re installed them and that fixed the high idle.

I think the new seals were a bit harder that the old ones so they didn’t seal well. I had thought the old ones were bad because they were kind of soft. They looked fine but were a bit soft. Turns one the soft ones worked better.

THANK YOU!!

Steve B

[JamesM]

I think the new seals were a bit harder that the old ones so they didn’t seal well. I had thought the old ones were bad because they were kind of soft. They looked fine but were a bit soft. Turns one the soft ones worked better.

Thats odd, normally its the old ones that get rock hard. Definitely want them to be soft enough to seal properly.