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Post Info TOPIC: TTR running rich on tickover


Super Guru

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TTR running rich on tickover
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I have a carb that runs rich on tickover. Just touch the choke and its stalls immediately.

I have set the float height artificially low - made no difference so it's not flooding.

I have checked that the choke is seating properly so that's not the issue.

I tried a smaller pilot jet and it made no difference.

The pilot screw makes no difference screwed fully in or out.

The slide is working as it should and the needle is properly fixed in place.

137 main jet on VO5 nozzle.

The TTR runs fine on other carbs.

What am I missing - what else could cause the problem - anyone got any ideas please?

Brian



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Could the throttle slide be NOT closing properly? confuse

Is there a scuff on its side - is it slightly oval - is it burred somewhere ???? confuseconfuse

Are the cables adjusted correctly to let it seat down to the slide adjuster???? confuseconfuseconfuse

Martyn



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Budleigh Salterton. Devon



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Thanks for the feedback Martyn.

The throttle slide is definitely fully closing.

To check the carb I ran it without the cables attached.

Logically I can't think why the throttle slide/needle/nozzle/main jet could make the TTR run rich at tickover but I will strip out the slide assembly to make sure It's all OK wink

Brian



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hi brian i once had carb problems with a rd 350 lc that i had restoredi tried many things but no cure until one day i was removing the jets & noticed one hole in one jet was slightly bigger than the other but they were both stamped the same number so i removed the needle put it in one jet & marked it then the other they were different so i guess some one had drilled the jet larger which people used to do when they were young & stupid just a thought john

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