Blow by after weber install and no acceleration

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kal666
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Joined: Sat Jul 18, 2015 8:45 pm

Blow by after weber install and no acceleration

Post by kal666 »

Hey everyone, just swapped from a 350 holley to a 32/36 weber, now the engine is blowing the dipstick out an oil is leaking out, and it will not accelerate just slowly takes off but won't speed up. Engine has a crow race cam, decked head, extractors im a bit lost atm if anyone has any ideas please comment
Turbocoupe75
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Location: Adelaide

Re: Blow by after weber install and no acceleration

Post by Turbocoupe75 »

Check your vacuum advance is hooked up, and the fuel is going in the right way into the weber..if all else fails change back..
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tobytj
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Location: Brisbane

Re: Blow by after weber install and no acceleration

Post by tobytj »

Blowing dip stick out? Can only think that somehow in the fitting process you have blocked off the engine breather on top of the rocker cover (or hose therefrom).

No acceleration sounds like an accelerator pump issue. Easy to check, just peep down the throat and work the throttle and you should see a stream of fuel from one side of the pump jet.

An emptyish fuel bowel will elicit similar symptoms. Check pump / needle and seat and , as mentioned above, fuel hose connected to inlet (downward facing) not return (horizontal) connection points.
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Jonno
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Re: Blow by after weber install and no acceleration

Post by Jonno »

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