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Judder Below 2000Rpm


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#1 ings

ings

    Mini Mad

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Posted 11 July 2018 - 06:26 AM

1997 MPi

 

Mi Mpi started to judder from time to time when drinving slowly in traffic jam or other slow driving situations.

With full trottle or higher rpm the engine runns nice.

But when i like to drive slowly with just tipping the trottle the car starts to judder.

the difficult thing is this happens not everytime but more and more.

 

Didnt had that before and changed nothing. Sparkplugs and Fuelfilter are almost new around 1000Miles.

 

 

Trottle valve problem maybe? or injection valve?



#2 Bat

Bat

    One Carb Or Two?

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Posted 11 July 2018 - 08:04 AM

Hi,

Sounds like an air leak in inlet side of the engine. Check all vacuum and breather pipes also check the inlet manifold hasn't worked loose...

Cheers  :proud:



#3 ings

ings

    Mini Mad

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Posted 11 July 2018 - 09:17 AM

ok good hint. I will search for loose screws on the mainfold and check all the pipes.



#4 ings

ings

    Mini Mad

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Posted 11 July 2018 - 07:29 PM

No loose screws and all pipes look like new.
I cleaned the avc, maf, throttle valve and still judder.

Then i checked the sparkplugs and decided to change the plugwires.
Now it runs perfect.

Ome of the cables was bad.




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