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over reving / high idle

Tech Talk for Nissan owners.

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over reving / high idle

Post by hottiemonster »

this is for a Mav 92 tb42 carby if you dont know what i drive :D

i just washed the engine bay this morning, although i was a bit viscious with the hose the car wouldnt start which i expected that.

i got it started and it idles at 2400-2600 on both gas and petrol. i used to a screwdriver to adjust the idle but that did nothing.

so i took it for a major thrashing and kept stalling the car letting out the clutch slowly a few times with the brake on.

i got no ideas.

any help?

thanks
Last edited by hottiemonster on Mon May 24, 2004 7:20 pm, edited 1 time in total.
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Post by MYTTUF »

Drive around bogholes!!

Prevention is better that cure!
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Post by CJ Burns Esq »

Sounds like the throttle cable is stuck or the hand throttle is on. Or a peice of crud in the trhottle linkages stopping it from closing onto the idle stop.
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Post by hottiemonster »

CJ Burns Esq wrote:Sounds like the throttle cable is stuck or the hand throttle is on. Or a peice of crud in the trhottle linkages stopping it from closing onto the idle stop.


the hand trottle is not on, could it be the spring to the idle unit?

this problem was only sometimes before but recently not that high, before it was only 1600, but after i wash it, it is a lot higher.
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Post by DaveS3 »

Again, its probably the cable or linkages, happens to my LR then eventually goes back to normal...

Something must be sticking for it to happen, try lubing the cables or something!

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Post by moose »

spray the butterfly linkages with WD40 or similar !!
where the cable connects to the carby , there is a white plastic cam , check that it isnt stuck !!!
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Post by hottiemonster »

moose wrote:spray the butterfly linkages with WD40 or similar !!
where the cable connects to the carby , there is a white plastic cam , check that it isnt stuck !!!


ok, i will check it all.
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Post by berazafi »

i dont belive it will be linkages you probably blew off one of the vacumm hoses with the water check them all, i bet theres one missing
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Post by patrol man »

tb42 carbys have a baffel under the carby when old and fu** they wear and come loose which can jam the secondarys open a little. if not this check the secondary butterfly and see if it is closing properly.
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Post by TUFF MAV »

check & see if the wire to the choke has power, might have blown fuse.

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Post by Rainbow Warrior »

Wriggle the hand throttle in and out a few times and drown the cables/linkages in WD40, not RP7 it leaves a gummy residue.
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Post by bogged »

take ya foot off the accelerator dickhead.. :rofl: :rofl:
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Post by hottiemonster »

bogged wrote:take ya foot off the accelerator dickhead.. :rofl: :rofl:


yeah whatever
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