increase tickover speed a bit?

brookie · Post by **brookie** » Sun Jan 27, 2008 11:41 am

Guys! Can anyone tell me how to increase tickover speed by a fraction? It ticks at about 650 rpm at the mo, but makes the car vibrate, with a slight increase on the peddle it runs sweetly at 750 ish, so I wanted to up it a little. Any ideas? ( 2wd manual)

thanks!

haydn callow · Post by **haydn callow** » Sun Jan 27, 2008 2:15 pm

I "think" if you look under the drivers seat by the fuel pump you will find a throttle ajuster.
Make sure your air filter is good

bigdaddycain · Post by **bigdaddycain** » Sun Jan 27, 2008 9:27 pm

Personally speaking,i'd seek the advice of a diesel specialist before adjusting anything,you may inadvertently adjust the fuel/air ratio...you can't really second guess such things.

mikeonb4c · Post by **mikeonb4c** » Sun Jan 27, 2008 11:33 pm

bigdaddycain wrote:Personally speaking,i'd seek the advice of a diesel specialist before adjusting anything,you may inadvertently adjust the fuel/air ratio...you can't really second guess such things.

...but if you find there really is something as simple as a screw for adjusting the throttle lever stop, then you'd think it would be safe to try that?

roosteruk · Post by **roosteruk** » Mon Jan 28, 2008 12:24 am

bigdaddycain wrote:Personally speaking,i'd seek the advice of a diesel specialist before adjusting anything,you may inadvertently adjust the fuel/air ratio...you can't really second guess such things.

You can't really alter that on a diesel Ste.
As Mike said, it will be a screw adjustment on the pump, throttle stop lever.

bigdaddycain · Post by **bigdaddycain** » Mon Jan 28, 2008 12:25 am

Oh yes mike, as long as you know that it's definitely just an adjuster for the idle speed.

I'd be hesitant of touching anything in case i buggered something up!

If i'd got definite confirmation that such and such a screw adjusted JUST the idle speed, then i'd be happy to experiment with various settings. (if i needed to).

My concern is to suggest adjusting things, when in fact the fuel/air ratios could be upset.

I think i'd take a pic of the adjusters before i touched owt,just so i'd know how to "resume to default" if need be.

brookie · Post by **brookie** » Mon Jan 28, 2008 12:28 am

Thanks guys, I knew I'd get advice from you. I'll have a look and see if it's a simple case of throttle adjustment on the cable , if not I'll leave it alone!

Mark.

bigdaddycain · Post by **bigdaddycain** » Mon Jan 28, 2008 12:29 am

roosteruk wrote:
bigdaddycain wrote:Personally speaking,i'd seek the advice of a diesel specialist before adjusting anything,you may inadvertently adjust the fuel/air ratio...you can't really second guess such things.
You can't really alter that on a diesel Ste.
As Mike said, it will be a screw adjustment on the pump, throttle stop lever.

I'm no mechanic as you know karl... i'm going from my previous experience with carbs... I'd assume the injector pump,would have adjustment for the fuel ratio, as well as a simple idle speed adjuster.

bigdaddycain · Post by **bigdaddycain** » Mon Jan 28, 2008 12:32 am

brookie wrote:Thanks guys, I knew I'd get advice from you. I'll have a look and see if it's a simple case of throttle adjustment on the cable , if not I'll leave it alone!

Mark.

I've never investigated if there is an adjuster on the actual throttle cable brookie,but, now you come to mention it, there feels like there is a definite "slop" in mine... Post your findings please?

dandywarhol · Post by **dandywarhol** » Mon Jan 28, 2008 12:34 am

Part no. 241882 adjusts the idle speed. You won't affect the air/fuel ratio with that - in fact you won't affect the fuel deliverywith anything unless you mess about with the injectors

.

PS..........see post below - wrong info!

bigdaddycain · Post by **bigdaddycain** » Mon Jan 28, 2008 12:38 am

Well...you learn something everyday! Cheers dandy...

scanner · Post by **scanner** » Mon Jan 28, 2008 12:50 am

bigdaddycain wrote:
roosteruk wrote:
bigdaddycain wrote:Personally speaking,i'd seek the advice of a diesel specialist before adjusting anything,you may inadvertently adjust the fuel/air ratio...you can't really second guess such things.
You can't really alter that on a diesel Ste.
As Mike said, it will be a screw adjustment on the pump, throttle stop lever.
I'm no mechanic as you know karl... i'm going from my previous experience with carbs... I'd assume the injector pump,would have adjustment for the fuel ratio, as well as a simple idle speed adjuster.

An injector pump is nothing like a carb as it has nothing to do with or any connection in anyway with any airflow. All the idle adjuster does is alter the point at which the throttle lever stops which is why Mike correctly refers to it as a Throttle Stop.

Mine idles at around 850-900rpm, as just about everything else I have had has, so I reckon 650 is way too low.

But I don't think the part DWH refers to is the right one, that could be the maximum fuelling adjuster and you don't want to touch that.

All you want to do is find the screw that changes the point at which the throttle lever rests and wind that out slightly. If you work the throttle pedal while watching the injector pump you'll see the arm move and see what it stops against when you release it - that is what you adjust.

You can also achieve the same effect by adjusting the screw adjuster on the throttle cable to take up the slack. This will have the added benefit of improving throttle response as well.

mikeonb4c · Post by **mikeonb4c** » Mon Jan 28, 2008 12:58 am

Yep, I'm not mechanic either and I wouldn't touch anything unless it was blindlingly obvious it was a screw that simply altered the stopping point of the throttle lever (even then I'd not how much I'd turned it so I could revet to original if need be). Looking at part 24-1881 I wouldn't know if it was safe or not as it seems to disappear into the interior, so I'd leave it alone.

Tell you what though, the way my back was today I reckon my days of bending over engine bays are coming to an end. What was that phone number for Mike at Wheelquick

bigdaddycain · Post by **bigdaddycain** » Mon Jan 28, 2008 12:58 am

scanner wrote:
All you want to do is find the screw that changes the point at which the throttle lever rests and wind that out slightly. If you work the throttle pedal while watching the injector pump you'll see the arm move and see what it stops against when you release it - that is what you adjust.

You can also achieve the same effect by adjusting the screw adjuster on the throttle cable to take up the slack. This will have the added benefit of improving throttle response as well.

I'll have a look at mine tomorrow, there is an inch or so of play in the throttle before it actually revs.

scanner · Post by **scanner** » Mon Jan 28, 2008 1:10 am

bigdaddycain wrote:
scanner wrote:
All you want to do is find the screw that changes the point at which the throttle lever rests and wind that out slightly. If you work the throttle pedal while watching the injector pump you'll see the arm move and see what it stops against when you release it - that is what you adjust.

You can also achieve the same effect by adjusting the screw adjuster on the throttle cable to take up the slack. This will have the added benefit of improving throttle response as well.
I'll have a look at mine tomorrow, there is an inch or so of play in the throttle before it actually revs.

If you lose an inch of throttle movement you could well gain a few MPH and lose a few MPG.

increase tickover speed a bit?

increase tickover speed a bit?

tickover

Re: tickover