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headgasket
 Post subject: HS4 fuel leak problem
PostPosted: Sun Nov 15, 2009 11:02 am 
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848cc
848cc
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Joined: Thu Feb 14, 2008 3:25 pm
Posts: 258
Location: Bathurst, NSW
Hey all, I'm down to the last source of smell from my car :D

When I'm at highway speeds, or I give the engine a bootful of gas, I can smell petrol (I think). Looking in the engine bay afterward, the top of the carb float is wet with petrol. What's going on here?

Also, if I try to move the float by hand, it can turn with about 1-2mm of play with respect to the carb body. Is this normal?

Cheers!

hg.

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drmini in aust
 Post subject:
PostPosted: Sun Nov 15, 2009 11:13 am 
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Joined: Fri Mar 19, 2004 6:19 pm
Posts: 39762
Location: near Baulkham Hills, NSW
Obviously your needle valve in the float chamber lid isn't sealing properly.
I would fit a new one. Check float level when you do this.
The float chamber is rubber mounted on most HS series SUs, so yes you can move it about by hand. It should sit vertical.

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R. :mrgreen:
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headgasket
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PostPosted: Sun Nov 15, 2009 7:52 pm 
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Ok, does this require removing the carby from the car?

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drmini in aust
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PostPosted: Sun Nov 15, 2009 8:22 pm 
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Joined: Fri Mar 19, 2004 6:19 pm
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No, just the float bowl lid. 3 screws... :wink:

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R. :mrgreen:
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