KV6 intake problem

[TRUENOSAM]

Hi all. I am in the process of possibily taking a MG ZS 180 in p/x but it has an erratic throttle fault sometines and has been diagnosed as an intake butterfly fault??. What is this fault exactly and whats the average cost price.

Thanks in advance

[zttsam]

Hi, if the inlet butterflies are rattling then the only solution is a new inlet manifold, cost of about £450.00, you could get a second hand one but it could be the same as this is acommon fault. Hope this helps.

[TRUENOSAM]

zttsam said:

Hi, if the inlet butterflies are rattling then the only solution is a new inlet manifold, cost of about £450.00, you could get a second hand one but it could be the same as this is acommon fault. Hope this helps.

Thanks

[Platinum]

Is it the throttle butterfly valve that is playing up or the variable induction tract butterflies in the plenum?

Reading posts on http://forums.xpowerforums.com/ it appears the rattling plenum butterflies can sometimes be cured by changing one of the two motors that control their movement.

[KAB888T]

I replaced mine with a reconditioned one which then wnet after a proberbly a year.
I (very carefully) was able to prize open the cover after removing and then using small bolts and patience reattach the swivel on the butterfly.
Oil gets into the inlet manifold causing the plastic push on connectors to come apart.
Check its not just the "VIS" motors- wee motors on the side of the unit- 4 screws each. Remove and check how much play is in the arm thats left- if just really back and forward probebly just the motor if moves freely then needs reattached/ replaced.
I will try and find a pic of the unit disassembled later!

[TRUENOSAM]

Thanks chaps but I have now cured the problem. It was a poor diagnosis by another garage and the fault was not rattaling it was hunting and the revs would hold. A quick reset of the throttle potentiometer and now more faults thus far