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Author Topic: Petrol in sump...  (Read 292 times)
Rich Goldfinch
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« on: October 06, 2017, 10:53:34 AM »

Hi all,

My s1 berlina's sump is filling up with petrol, i changed the oil and it runs however is not pulling cleanly.  Assume it's something to do with the carburettor, has anyone seen this before?

Cheers
Richard
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Theo
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Theo Kyriacou


« Reply #1 on: October 06, 2017, 10:14:00 PM »

What type of fuel pump do you have? If it's mechanical, then most likely your culprit. I've seen this before on several Fiats with mechanical fuel pumps. When the pump diaphragm  ruptures, petrol gets into the sump and the engine doesn't run cleanly due to insufficient fuel pressure.

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Theo Kyriacou.
Rich Goldfinch
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« Reply #2 on: October 07, 2017, 07:38:10 AM »

Hi Theo,

Thanks, yes it's mechanical.  Will have a look...

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lancialulu
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« Reply #3 on: October 08, 2017, 01:50:50 PM »

These are hard to come by. You will need to sort the split diaphragm even if you convert to electric (low pressure c 3 psi no more). You could blank off the mechanical port. Geoff may have some pumps.
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lancialulu
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« Reply #4 on: October 08, 2017, 02:52:14 PM »

http://www.capassoricambi.it/en/lancia-gamma/108060-pompa-meccanica-lancia-gamma-.html
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Geoff 'thecolonel'
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« Reply #5 on: October 09, 2017, 01:35:10 PM »

It could also be accelerator pump diaphragm on the carb,
used to be a common fault.

We do have full carb service sets in stock or you can
purchase diaphragm only from eurocarb.

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Geoff  'the colonel'   2 x '78 Gamma coupe  and whatever has the keys left in it
lancialulu
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« Reply #6 on: October 10, 2017, 01:32:45 PM »


Available but over 150 eu!!!!!
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lancialulu
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« Reply #7 on: October 20, 2017, 04:28:38 PM »

Just for info I have bought a new correct Fispa mech pump for my Gamma for 100eu from Cavalitto.
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