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Help!! My 940 is not right UPDATE 900 1991

posted by  someone claiming to be Dangerous Dave on  Mon Oct 18 12:22 CST 2004 [RELATED]

Ok guys,

Firstly many thanks to spook, steve and anarchyx34 for your help. I should really have checked the thermostat (its always the simplest things).

I have replaced the thermostat today (cost £10 total) it took me an hour, but that included cleaning the thermostat housing and cylinder head because it had corroded a little. Now my 940 gets to the correct temperature quickly and stays there (woohoo!!!). I replaced it with a 92C thermo because winter is coming.

Now for my next problem, my earlier post mentioned rough idle, but i forgot to mention that if I increase the revs to 1500 and 2000, it misfires slightly and the revs drop and pick up again, then it repeats. It also hesitates whenever pulling away from lights or junctions, it kind of lacks power until it reaches 1500/2000rpm after that its fine.

I have cleaned the throttle body a few times now, every time there was a dirty oily residue on it. This was coming from he damn engine breather, and it happened even if I cleaned the breather, so I plugged the inlet on the intake bellows and plugged the hose on the manifold side and left the breather tube open. and its been clean ever since.

Not long ago, I took the IAC valve off and had a look at it. In its closed state, it let a little air through, the valve had to be turned just a little to completely close the valve off. Is this normal?? or is it defected? I still haven't tested the throttle switch, but I will on wednesday.

Cheers everyone








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    Help!! My 940 is not right UPDATE 900 1991

    posted by  Steve on  Mon Oct 18 12:37 CST 2004
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    last visit: Fri Oct 24 07:16 CST 2014
    [RELATED]

    Sounds as though you have some kind of mixture problem. How is the fuel economy? Any black smoke out the pipe?

    While you can clean the IAC valve (Spook has good instructions for this) using carb cleaner, it appears normal from the description.

    Good thing you are not living in Southern California: the Air Quality Gestapo would be on your case at once with that disconnected breather. You'd be in shackles headed for Guantanamo.








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      Help!! My 940 is not right UPDATE 900 1991

      posted by  someone claiming to be Dangerous Dave on  Tue Oct 19 22:45 CST 2004 [RELATED]

      I've also de-cat it, so I get more economy and more power (supposedly!)

      Fuel economy is ok, it does about 25mpg, theres no black smoke coming out the exhaust, only steam (I think).

      Cheers guys








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        Help!! My 940 is not right UPDATE 900 1991

        posted by  someone claiming to be Dangerous Dave on  Tue Oct 19 23:07 CST 2004 [RELATED]

        here's my beloved brick (check the link below)









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          here's my beloved brick 900 1991

          posted by  someone claiming to be Dangerous Dave on  Tue Oct 19 23:09 CST 2004 [RELATED]







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