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Best Answer zace66 , 13 August 2020 - 07:48 AM

actually - it was something else (after stripping the carb twice!) 

It was the fact that when he put the new fuel pump on he forgot to use the spacer, so it was over ppressuring!!!

Spacer on pump added and she roared into life... once the carb was primed ;)

 

Thnaks all

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#1 zace66

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Posted 09 August 2020 - 02:11 PM

can the AZX1817 model fuel pump be interchanged for the AZX1818MS on my 1275 engine? Would I need to make any changes to the carb ?  codes are the parts from mini spares as I cannot post images on this forum;)

 

 

 



#2 cal844

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Posted 09 August 2020 - 05:41 PM

Will be fine, I used a fuel pump from a 1275 engine for a 998, no issues thus far.

Id recommend using the Azx1717 as the AZX1818 will cause the fuel pipe to be very close (too close IMO) if you fit A LCB type exhaust manifold

Hope this helps

Cal

Edited by cal844, 09 August 2020 - 05:45 PM.


#3 zace66

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Posted 10 August 2020 - 08:33 AM

Hmmm.... our local garage seems to think that as the carb is spilling loads of fuel, that the new fuel pump is too strong...  is this the case or is the carb more likely at fault?



#4 cal844

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Posted 10 August 2020 - 09:11 AM

Pressure should be 3psi maximum at the carb, borrow a fuel pressure tester to check the pressure.

Then go from there.

When you say spilling loads of fuel is it coming out the over flow or have they removed the fuel inlet pipe from the carb?

Edited by cal844, 10 August 2020 - 09:18 AM.


#5 zace66

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Posted 10 August 2020 - 09:33 AM

overflow



#6 cal844

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Posted 10 August 2020 - 10:19 AM

Float valve is sticking, remove the float bowl lid, then remove the float and valve, you only need a screwdriver, pair of pliers and a small spanner.

Very easy to fix. Also clean the junk out the bottom of the bowl.

After you have done this fit an online fuel filter

#7 Chris1275gt

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Posted 10 August 2020 - 10:27 AM

I would check your float chamber valve and float 1st.
Ahh beaten to it.

Edited by Chris1275gt, 10 August 2020 - 10:29 AM.


#8 zace66

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Posted 13 August 2020 - 07:48 AM   Best Answer

actually - it was something else (after stripping the carb twice!) 

It was the fact that when he put the new fuel pump on he forgot to use the spacer, so it was over ppressuring!!!

Spacer on pump added and she roared into life... once the carb was primed ;)

 

Thnaks all


Edited by zace66, 13 August 2020 - 07:48 AM.


#9 ryanlogsdon

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Posted 21 August 2020 - 10:29 PM

If this helps anyone, I've been over-pressuring my 62 Mini for a year now with a 7psi Edelbrock because that's the only one the shop had when mine kicked the bucket.

 

It has a tendency to overflow the fuel bowl from time to time, but if your carb is nice and clean with relatively new parts inside (ie: a new pin), you should be able to get away with a few exra psi.

 

And on that note, it's time for me to finally buy the low-pressure pump I should have :)


Edited by ryanlogsdon, 21 August 2020 - 10:30 PM.






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