 Brand New Weber 44 Leaking! |
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| MikeM |
 May 20 2017, 08:17 PM
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#1
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Senior Member  Group: Members Posts: 558 Joined: 16-May 10 From: Calgary, Canada Member No.: 11,733 Region Association: Canada  |
Hi all...
Last fall I bought and installed new made in Spain Weber 44's. I have driven maybe 50 miles since installation. Today after I drive I smelled and noticed a fuel leak. Fuel was dripping off the accelerator pump adjustment rod under the diaphram housing. It was not coming from the housing itself but from under it, in the middle of the 2 barrels . It was a pretty good drip that started several minutes after shutting off the engine. It does not appear to leak with the engine running. All I've done recently is installed larger idle jets and installed the rotary fuel pump from CB Performance. Any and all help and advice appreciated. Thanks. Mike |
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| MikeM |
May 21 2017, 09:19 AM
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#2
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Senior Member Group: Members Posts: 558 Joined: 16-May 10 From: Calgary, Canada Member No.: 11,733 Region Association: Canada |
Any Weber carb gurus here today?
Thanks. |
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| michael7810 |
May 21 2017, 10:41 AM
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#3
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Senior Member Group: Members Posts: 1,078 Joined: 6-June 11 From: Scottsdale, AZ Member No.: 13,164 Region Association: Southwest Region 
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Not an expert but since you replaced the pump could the pressure be too high and/or float levels off? Just thinking...
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| Garland |
May 21 2017, 03:20 PM
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#4
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Restoration Fanatic Group: Members Posts: 1,327 Joined: 8-January 04 From: ......Michigan...... Member No.: 1,535 Region Association: Upper MidWest
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| MikeM |
May 21 2017, 08:51 PM
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#5
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Senior Member Group: Members Posts: 558 Joined: 16-May 10 From: Calgary, Canada Member No.: 11,733 Region Association: Canada |
Well...we took the carb off and checked the float setting. It all looked good.
Cleaned the jets for good measure and put the carb back on the car. Same problem. I drive the car and get it warmed up. After it's shut down for about 15 minutes it starts to leak. Looking down into the throats of the carb we can see gas dripping onto the butterfly. So, is this too much pressure in the float bowl or is it engine heat boiling the gas out the top of the float bowl?? Again, it's a NEW CB Performance fuel pump internally regulated to 3.5 lbs. Also it only happens on one side of the engine. All tips appreciated. Mike |
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| r_towle |
May 21 2017, 09:40 PM
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#6
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Custom Member Group: Members Posts: 24,560 Joined: 9-January 03 From: Taxachusetts Member No.: 124 Region Association: North East States
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boiling can happen.
Do you have phenolic spacers between the heads and intake manifold or the manifolds and carbs? You need some sort of thermal break there and they may not have come wth your kit. they are black and look like plastic, are about 1/8 inch thick. Rich |
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| MikeM |
May 21 2017, 10:36 PM
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#7
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Senior Member Group: Members Posts: 558 Joined: 16-May 10 From: Calgary, Canada Member No.: 11,733 Region Association: Canada |
Rich...I do not have those spacers> Where can I get them?
Thanks. |
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| porschetub |
May 21 2017, 11:40 PM
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#8
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Advanced Member Group: Members Posts: 4,697 Joined: 25-July 15 From: New Zealand Member No.: 18,995 Region Association: None |
QUOTE(MikeM @ May 22 2017, 04:36 PM)  Rich...I do not have those spacers> Where can I get them? Thanks. Hell I would have expected that from an Empi knockoff made in china ,sounds like its a boiling issue as mentioned ,356 porsches were bad for this. Not seen them (isolators ) for sale but not really ever needed them,CB performance or Bugpack,Aircooled.net maybe. Good luck. |
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| falcor75 |
May 22 2017, 12:47 AM
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#9
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Senior Member Group: Members Posts: 1,579 Joined: 22-November 12 From: Sweden Member No.: 15,176 Region Association: Scandinavia
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You can order the insulators from a dealership too, not terrible expensive.
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| MikeM |
May 22 2017, 09:12 AM
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#10
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Senior Member Group: Members Posts: 558 Joined: 16-May 10 From: Calgary, Canada Member No.: 11,733 Region Association: Canada |
QUOTE(r_towle @ May 21 2017, 09:40 PM) boiling can happen. Do you have phenolic spacers between the heads and intake manifold or the manifolds and carbs? You need some sort of thermal break there and they may not have come wth your kit. they are black and look like plastic, are about 1/8 inch thick. Rich Hi Rich...Found them at aircooled.net. They are 2 to 3 mm thick. Is this adequate? Much more the that and I'll need to change the studs on the intake manifold. Thanks |
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| rhodyguy |
May 22 2017, 11:20 AM
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#11
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Chimp Sanctuary NW. Check it out. Group: Members Posts: 22,060 Joined: 2-March 03 From: Orion's Bell. The BELL! Member No.: 378 Region Association: Galt's Gulch |
for the intake to engine spacer just use the appropriate phenolic spacer for an engine with FI. they should help with stud lengths.
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