DIR Return Create A Forum - Home
---------------------------------------------------------
Old Leafsprung Land Rovers
HTML https://ollr.createaforum.com
---------------------------------------------------------
*****************************************************
DIR Return to: Technical tips & Questions
*****************************************************
#Post#: 103042--------------------------------------------------
2.25 Petrol Fuel Pump Issues
By: falcondriver Date: September 21, 2019, 2:38 pm
---------------------------------------------------------
Hi all,
My '66 2.25 petrol 2a has been in need of a little attention
after 12 months in the garage. I spent some time last week
trying to get her started, here is what I did:
- Checked the battery ~12.7v - after a charge
- Starter motor sounds like the right speed
- New set of points with the correct gap
- Spark plugs cleaned and re-gapped
- Spark seen at each HT lead
- Cleaned the carb with carb spray
- Fresh tank of petrol
When I went to prime the fuel pump it just didn't feel right, so
I disconnected the outlet and used a paper cup to catch the fuel
I expected to come out. However, it seems that the cup wasn't
needed as it didn't pump a drop of fuel. Here is what I did
next:
- Turned over the engine once to make sure the cam was in the
right position (did this several times just in case)
- Ordered an overhaul kit and replaced the one-way valves and
diaphragm.
- Checked for blockages between the inlet and the sediment bowl,
the sediment bowl and the diaphragm chamber, and to the outlet
point. Air can blow freely between each.
- Sealed the sediment bowl with a bit of grease to keep it air
tight
- Used a dish of fuel to test it outside of the engine
compartment.
But still nothing is being pumped. I understand it needs to be
pumped with the level held upwards (as the cam would do) and
using the priming handle to draw fuel through. I have tried it
without holding the lever upwards too, same result.
Any thoughts?
Regards
FalconDriver
#Post#: 103043--------------------------------------------------
Re: 2.25 Petrol Fuel Pump Issues
By: Sunny Jim Date: September 22, 2019, 4:52 pm
---------------------------------------------------------
Have you checked for leaks between the tank and the pump? Even a
small leak will prevent the pump from sucking up petrol.
Have you checked that the pick up pipe in the tank is clear?
Sunny Jim
#Post#: 103045--------------------------------------------------
Re: 2.25 Petrol Fuel Pump Issues
By: falcondriver Date: September 25, 2019, 6:52 am
---------------------------------------------------------
Hi Sunny Jim,
I removed the whole pump in order to rule out fuel pipe and
pickup pipe problems. I understand that with a dish of petrol
and a tube it is possible to suck up fuel and prove it works.
It's not happening for me at the moment.
Cheers
FalconDriver
#Post#: 103046--------------------------------------------------
Re: 2.25 Petrol Fuel Pump Issues
By: Sunny Jim Date: September 25, 2019, 5:32 pm
---------------------------------------------------------
I am not sure you need to hold the lever up to prime it? I have
a spare in the cellar and if you prime it with the lever up,
nothing seems to happen!
If it is still not pumping try filling the sediment bowl with
petrol first to help it prime.
Maybe time to replace the pump?
Sunny Jim
#Post#: 103047--------------------------------------------------
Re: 2.25 Petrol Fuel Pump Issues
By: falcondriver Date: September 26, 2019, 7:05 am
---------------------------------------------------------
Yes I think it is probably time to replace it, but given that
it's an AC pump and much better quality than the aftermarket
stuff, I wanted to get it working again. I might trawl eBay for
an original but working replacement.
Cheers
FalconDriver
#Post#: 103048--------------------------------------------------
Re: 2.25 Petrol Fuel Pump Issues
By: Sunny Jim Date: September 27, 2019, 5:57 pm
---------------------------------------------------------
I did an Ebay trawl and found an NOS AC one!
Sunny Jim
*****************************************************