Cannot adjust Idle speed - little lever on fuel pump stuck

Hi,

My idle speed was too low (500rpm) so I wanted to increase it - in the past I think I had been adjusting the wrong thing and moving the throttle lever stop bolt.

I re-looked at the Haynes Manual which points to 2 bolts which act as stops for a rocker arm. One bolt for cold (high speed) idle the other for warm idle.

The problem is the arm refuses to move (I believe the wax activated cable should be able to pull it to activate cold idle). When i try and screw the bolt in to increase the idle speed I can't move it.

Also I tried forcing it over (not too hard) with a screw driver but it was solid.

Any ideas? I'd like to fix it since my power steering doesn't work at the low revs and is a right pain!

Reply to
405 TD Estate
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Leave it mine idles at 500rpm and i have had no problems with it.seem to not have any problem with my power steering when engine is idle at

500rpm.
Reply to
Chris

Does it idle faster when cold? If so then at least the wax fast idle unit is working.

Reply to
Brian

It would also help if you said which pump you have, Bosch or CAV/Rotodiesel.

Reply to
Brian

It's the Bosch.

No the wax thing doesn't work at all - for the hot/cold bit to work it would need to move this lever via a cable and the lever is stuck solid. Infact when I tried to adjust the wax cable tension the cable started pulling through the nipple because the lever was stuck.

I'd like to change it 'cos my power steering doesn't work so I have to blip the throttle for it to steer when parking.

Reply to
405 TD Estate

Right, I have just looked up the details in my Haynes manual. The lever you found is not moving has two adjustment screws working on it, both pointing vertically down, at the back of the pump, either side of the lever. The one nearest the timing belt is the fast idle adjustment, the one further away is the main idle speed. If both of these have been screwed right down, they will lock the lever, not allowing it to move at all. Try unscrewing the fast idle one a few turns and see if the fast idle then works, and if the lever will then move. Then you can try to increase the basic idle speed with the other screw.

Reply to
Brian

Yes that's the right part

Sadly there is loads of room from the lever to the hot idle adjuster - it is nearly all the way out. It is the lever itself that seems stuck............

Reply to
405 TD Estate

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