Adjusting Idle Speed on a Speed Six Engine

Adjusting Idle Speed on a Speed Six Engine

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anonymous-user

Original Poster:

53 months

Tuesday 8th October 2002
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Morning all,

Does anyone know how to adjust the idle speed on a Speed6 engine? Every few months or so it drops on mine a little and means a 2 hour round trip to the dealers to get it up'd again.

Last time I saw the mechanic just use a screwdriver somewhere on the top of the engine. I know you should really analyse air/fuel mixture rates etc on the laptop but I only need to push it up by 100rpm so it should be OK.

(I'll take it to a specialist if I start getting problems.)

NB - It's a Cerbera Speed Six.

Thanks for any help.

Podie

46,630 posts

274 months

Tuesday 8th October 2002
quotequote all
I'd be surprised if it can be done with a screwdriver - surely it would be ECU controlled?

anonymous-user

Original Poster:

53 months

Tuesday 8th October 2002
quotequote all
The garage definitely just used a screwdriver somewhere on the top of the engine....took about 30 seconds to do.

klw95

20 posts

258 months

Wednesday 9th October 2002
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It is that simple, no ecu messing required.
Get someone to sit in the car and depress the throttle (with the engine off). If you then look at the top of the engine, near the air feed, look for the throttle cable movement. Where the throttle cable end comes to an end there will be a screw and a nut. Hold the screw static with a screwdriver, and with a spanner slightly loosen the nut. To increase revs turn the screw anti-clockwise. Start with a quarter of a turn, tighten the nut up hand tight, start the car to gauge increase. This is very much a case of trial and error. Once required idle speed is acheived, use screwdriver to hold screw static and tighten nut with spanner.

Sorry if the terminology is a bit vague, but I'm not a technician. Trust me the job is easier than it sounds. Successfully adjusted my Tuscan recently when I had the same problem.

fish

3,975 posts

281 months

Thursday 10th October 2002
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The speed 6 uses a nut with an allen keyed screw. Just release the nut ( can't remember size about 8-10mm) and screw the idle up with the allen key. Retighten the nut to lock in place ensuring the screw stop doesn't move. When hot set to about 900rpm. That should give you apprx 700rpm when cold

anonymous-user

Original Poster:

53 months

Thursday 10th October 2002
quotequote all
quote:

The speed 6 uses a nut with an allen keyed screw. Just release the nut ( can't remember size about 8-10mm) and screw the idle up with the allen key. Retighten the nut to lock in place ensuring the screw stop doesn't move. When hot set to about 900rpm. That should give you apprx 700rpm when cold



Cheers guys , should save me a trip to the dealers to get robbed.

Maybe pushing my luck now, but I don't suppose any of you are flash enough to own a digital camera and could post a piccy?

Knowing my luck I'll turn the wrong screw and the engine will fall out the bottom of the car.

Podie

46,630 posts

274 months

Thursday 10th October 2002
quotequote all
Cool... you learn something new everyday.

fish

3,975 posts

281 months

Thursday 10th October 2002
quotequote all
I'll try to explain which it is: If you stand on the offside of the car looking over the airbox you will see between cylinders 3 & 4 ie the middle the top of the throttle cable with a pin connecting it to the shaft running through all the throttle bodies.(from memory) on the other side of this shaft you will see the nut and bolt, they are black and quite small. The only other similar bolts etc are the individual ones to adjuct the throttle balance. They are slightly to the left , nearer the shaft and repeated on each throttle body.

anonymous-user

Original Poster:

53 months

Thursday 10th October 2002
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Nice one, I'll take a look at lunchtime.