Lister st2 fuel pump timing

[Liam webb]

Hi, iv recently done a full rebuild on my lister st 2 and I mean evreything, tried firing it up today would only run on one cylinder, the number one cyl wont fire, took the injector out number 2cyl cranked it over all I got was white smoke unburnt fuel. I have two shims on both pumps can the pumps be shimed diffrently or have to be the same. Its definitely a fuel based problem. If the clearences between heads isnt correct can this cause it to not fire

Thanks

Liam

[RLWP]

Yes, you have to shim the heads to get the bump clearance right

 

Yes, the pumps could be shimmed differently, you use the shims to get the spill timing right

 

And you have to get the pumps timed correctly to each other on the rack

 

The injector only ever delivers unburnt fuel when out of the cylinder

 

Richard

[Liam webb]

Ah okay, whats the best way to shim the heads and what distance do they need to be pumps are alighned correctly I shall have another go at spill timing. The enginenis also alittle tight nothing major gussing thats due to the new bearings etc. Its had crank regrind bearings camshaft bushes, rings valves pumps etc iv done the full works

[RLWP]

You don't have a manual?

 

Richard

[RLWP]

There's one here: http://www.winget.co.uk/document/LISTER%20ST%20WORKSHOP%20MANUAL.pdf

 

The torque settings are in there, as are the end float, governor settings, decompressor adjustments and the methods for spill timing and bump clearance.

 

I find that with the injectors out (or decompressed) I can pull a two cylinder Lister over with one hand by pulling the inside of the fan. It shouldn't be tighter than that

 

Richard

[Liam webb]

Iv got the manual or a manual. Anyway. Thabks for your help going to spill time it today. Thats how tight it is thanks

[RLWP]

Do the bump clearance too. If it is slightly out, you'll get uneven running. If it is a very long way out, you've got a bent rod and poor compression

 

Richard

[Liam webb]

Hi, thanks for help. All sorted turned the key two turns she started straight up. Next job new oil pump on gearbox to fit old one has seen better days.

[RLWP]

We have just had a batch of pump spindles made

 

Richard

[Liam webb]

I've bought a complete new pump for this,bi know they can be tricky to fit and a spanner on the end of the gearbox to rotate it until the pump engages and then just slides on. Alot of people have told me that they use engine oil in the gearbox, I thought it was ep80-90 to be used?

Liam

[RLWP]

EP80/90 for the gearbox and reduction box

 

Richard