Pagoda SL Group

W113 Pagoda SL Group => Drive train, fuel, suspension, steering & brakes => Topic started by: BartSt on October 11, 2022, 10:22:28

Title: High rev - 2000 rpm while parked
Post by: BartSt on October 11, 2022, 10:22:28

Hi all,

Where to look when the engine does not get below 2000 RPM, even while parked?

Linkage is ok, and "butterfly" is closed ... ;(

Thanks,

Bart

Title: Re: High rev - 2000 rpm while parked
Post by: BartSt on October 11, 2022, 15:32:44

Forgot to mention:

I had my injection pump completely re-done

Title: Re: High rev - 2000 rpm while parked
Post by: J. Huber on October 11, 2022, 21:57:51

Hi. Assuming it is an automatic -- could it be the Constant Speed Solenoid (CSS)?

Title: Re: High rev - 2000 rpm while parked
Post by: rwmastel on October 11, 2022, 23:27:00

This symptom coincided with the new injection pump being installed?  Any other recent work?

Just thinking about it logically, high rpm requires extra fuel AND air.  Where could extra air be supplied from?  Barometric compensator, warm up device, brake booster, other?  What about extra fuel?  Cold start valve, leaky injectors, fuel injection pump richness adjustment, other?  You may want to recheck linkage adjustment.  Check plugs for rich/lean condition to see if extra air or fuel is bigger problem.

Title: Re: High rev - 2000 rpm while parked
Post by: Mike Hughes on October 12, 2022, 00:12:25

Quote from: J. Huber on October 11, 2022, 21:57:51

Hi. Assuming it is an automatic -- could it be the Constant Speed Solenoid (CSS)?

That's what first came to mind when I first read Bart's query.  It will be interesting to hear what he finds.

Title: Re: High rev - 2000 rpm while parked
Post by: BartSt on October 12, 2022, 07:01:04

No, it is a manual...;(

Title: Re: High rev - 2000 rpm while parked
Post by: Mike Hughes on October 12, 2022, 11:56:08

Does it have a dashpot that might be sticking?

Title: Re: High rev - 2000 rpm while parked
Post by: BartSt on October 12, 2022, 12:38:03

That is a good one ...

Let me check, will get back

Title: Re: High rev - 2000 rpm while parked
Post by: ja17 on October 14, 2022, 03:44:29

Check your ignition timing also. In addition your distributor should retard the ignition at idle. What happens when you choke down the air idle screw on the intake manifold? Otherwise you have a huge air leak somewhere causing your high idle. Check your WRD, brake booster vacuum line, air flap on the venture etc.

Title: Re: High rev - 2000 rpm while parked
Post by: BartSt on October 14, 2022, 11:20:09

Lot's of good pointers for this weekend

Will revert on Sunday to you all

Enjoy!

Bart