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Post Info TOPIC: What do you think of my new Raid?


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What do you think of my new Raid?
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Just got this raid a few days ago and so far it's been running great apart from a couple of minor issues. The first is the carb leaks from the diaphragm gaskets and an issue I think is linked to that is occasionally what sounds like the carb area will make a loud pop sound and the bike may or may not stall. 

I'm guessing this leak is maybe causing air to get into the carb which creates this pressure build up and the pop which temporarily effects fuelling so it stalls. Any ideas? 

20180411_152454.jpg



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Welcome to the TTR Forum, Tim.

Nice looking original bike you've got.

The problems you describe sound typically like leak into manifold.

Either reseal the joint or renew the mounting.
The trouble starts when the rubber/alloy stub joint perishes and lets air in.

Martyn



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Budleigh Salterton. Devon



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Thanks for the welcome. Can you be more specific about the manifold issue? Do you mean fuel could be leaking into it or leaking out of it or air?



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Lots of info on inlet manifold/stub issues here http://ttr250.activeboard.com/t60393065/intake-manifold-stub-troubles/ wink

When the rubber parts from the aluminium stub it can allow air to be drawn in (not necessarily constantly) which can lead to erratic running.

Brian



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Ah ok. Say I'm riding it for an hour. It might pop once in that time. For the rest of the time it runs totally fine. Idle is fine, revs come down etc. Would that be consistent with a manifold issue or would you expect it more frequently?



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Difficult to say for certain. If it is a problem for you then best to check it out using the test Pete suggests on the other thread. Otherwise it will require a bit more work if there isn't an obvious visible issue i.e. a split in the manifold or the rubber moves on the ali stub when you wiggle the carb.



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Looking at that carb thread it shows up an issue with the aftermarket manifolds where the notch is in the wrong place. Are they all like this or do any of them actually work? I'd rather spend £6 than £40 if possible. 



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Sorry but I don't know if they are all like it from eBay. I only ever bought the one and it was upside down disbelief

Maybe someone else on here has bought one recently and can comment?

Otherwise it's a chance you take.

Brian

PS Your existing stub may be perfectly OK and the popping could be something else......



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Hi Tim

Welcome to the forum matey smile

Steve



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hi steve. 



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