Fuel pump regulator

Squinternotto Posts : 8 Join date : 2022-02-08

I have an 08 GRiSO. After changing out the actual pump and filter, I still have no pressure. The pump is running and pumping. The tech I have taken it to says it is the regulator built into the fuel pump assembly. Any one know of any hack before I buy the $800 assembly,,,,, hoping that is the issue?
Thank you

GRiSO Capo Posts : 10711 Join date : 2013-05-29 Age : 67

The relief valves are known to fail by the spring rusting but it is very rare. I'd pull the pump and double check the hose hasn't blown off. You can also check it simply by immersing it in a bucket of fuel and activating the pump . That will tell you if the pump is pumping and the relief valve is relieving.

If it is the valve?

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For future reference rather than buying the entire pump assembly at whatever obscene cost you can but a pump off the Bay of Fleas for peanuts. Much more sensible than spending a king's ransom!

Oh, and welcome. I hope your GRiSO has been rollerised?

GRiSO Capo Posts : 10200 Join date : 2013-09-30

Pete Roper wrote:: Oh, and welcome. I hope your GRiSO has been rollerised?

Ahem....1100.

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In GRiSO we trust!
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Don Abbondio Posts : 6086 Join date : 2014-03-13 Age : 69

To answer Pete. No! Not needed.

GRiSO Capo Posts : 10711 Join date : 2013-05-29 Age : 67

Apologies, it was the 2008 year that got me. I don’t think we got any 2V Grisos in 2008.

Also the 1100’s all had the shitty, non submersible hose. Unless it was replaced at the same time as the pump it’s likely blown off again or burst.

GRiSO Capo Posts : 10200 Join date : 2013-09-30

Pete Roper wrote:: Unless it was replaced at the same time as the pump it’s likely blown off again or burst.

I insert my thruppence in this slot.

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In GRiSO we trust!
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Don Abbondio Posts : 6086 Join date : 2014-03-13 Age : 69

I remember them

Squinternotto Posts : 8 Join date : 2022-02-08

Pete Roper wrote:: The relief valves are known to fail by the spring rusting but it is very rare. I'd pull the pump and double check the hose hasn't blown off. You can also check it simply by immersing it in a bucket of fuel and activating the pump . That will tell you if the pump is pumping and the relief valve is relieving.

If it is the valve?

[You must be registered and logged in to see this link.]

For future reference rather than buying the entire pump assembly at whatever obscene cost you can but a pump off the Bay of Fleas for peanuts. Much more sensible than spending a king's ransom!

Oh, and welcome. I hope your GRiSO has been rollerised?

I thinks that it Pete. I have the old one off and going to soak it in a few concoctions first. I was looking for a Bosch or like number on it.

Tanabuso Posts : 62 Join date : 2019-01-30

You ever resolve this issue with your GRiSO 1100
I have a 2007 with same issue

Squinternotto Posts : 8 Join date : 2022-02-08

I did. I bought a new fuel regulator. Total fix for the issue.

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Fra Cristoforo Posts : 828 Join date : 2016-04-14

Little over 1/2 price of the other one posted from Conyers, GA

Tanabuso Posts : 62 Join date : 2019-01-30

Thnx guys
Regulator ordered

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