Will a TS 4 cylinder standard efi fuel pump work on a v6 and not starve the v6?

i think they are the same part i can check my catalogues tomorrow if u wish

13-3-1 of the repair manual has 2 types of efi high pressure pump

one has the sender combined is lower pressure

the one on its own makes 300 kpa @12 volts

the one with the sender combined makes 294 kpa @12 volts

dont get a carby pump it wont work

magna oo, let me know what the catalogue says. magna buff thanks for that. I do not understand why there is a 1 psi difference between the 2 pumps. What difference can 1 psi make? It seems to me that both can be used for the same application. And looking at the one I have, the sender is mounted on the opposite side of the fuel pump bracket with a capacitor next to it. Is it the lower or higher pressure one? Once again, thanks for your effort and time. Cheers

the repair manual only shows the picture of the
pump without the sender attached


the pump with the sender attached is the lower pressure ?

dont know why there is a psi difference either

magna buff, thanks for the help

Will a TS 4 cylinder standard efi fuel pump work on a v6 and not starve the v6?
Hi Graham

I'm interested in what you guys have been discussing here. Assuming the higher kpa is for the six cylinder then I wonder whether the higher kpa is compensation for the two extra injectors & their associated piping.

Regards
Blake

If the added pressure is for the V6, wouldn't it be somewhat more than 6kpa additional? I mean that 6kpa is 3/5ths of nothing when we are talking about 300kpa. A proportional increase for 2 extra cylinders or a 50% increase in numbers of cylinders and injectors with associated piping and a larger fuel rail, I would have thought would require something like an extra 100kpa at least. But then I am not a motor engineer so what do I know? and a genuine Mitsi 400kpa fuel pump would be extremely popular with the turbo performance boys

the astron is a 2.6 is it not? there wouldnt have to be a very large increase in pump output over teh 4cylinder to 6 cylinder versions, due to the fact, that when it comes down to it, the 4clyinder engine has a bigger clyinder then the 6cylinder models.

3.0L divided by 6cyl = ~500cc per cylinder
2.6L divided by 4Cly = ~650cc per cylinder

so although there is litrage difference between engines, at any given rpm, there is only a slight difference in cylinder air charge, and only 200cc at wide open throttle, which is directly related to how much fuel is needed and how much pressure needs to rise to accomodate.

mnore too i tthen that, but there wouldnt be much if any difference in the pumps

If the added pressure is for the V6, wouldn't it be somewhat more than 6kpa additional? I mean that 6kpa is 3/5ths of nothing when we are talking about 300kpa. A proportional increase for 2 extra cylinders or a 50% increase in numbers of cylinders and injectors with associated piping and a larger fuel rail, I would have thought would require something like an extra 100kpa at least. But then I am not a motor engineer so what do I know? and a genuine Mitsi 400kpa fuel pump would be extremely popular with the turbo performance boys

Yes I see your point. Still watching with interest, might be slightly out of my depth on this one :lurk:
I might do something useful now like update my avatar!

my tf, u havn't updated your avatar. but seriously, Mitsubishi does not have a clue. After some pointed questions re electric fuel pumps on tr, ts and later, Mitsubishi can give no clear answer as to why there is a miniscule difference in pressure. even the 3.5 litre uses the 300kpa pump so I'm guessing that the difference is not even close to relevant to anything at all being that there is a 900cc difference between the 2.6 and the 3.5l motors but virtually no difference in the fuel pumps. I think I will begin using an avatar now

my tf, u havn't updated your avatar. but seriously, Mitsubishi does not have a clue. After some pointed questions re electric fuel pumps on tr, ts and later, Mitsubishi can give no clear answer as to why there is a miniscule difference in pressure. even the 3.5 litre uses the 300kpa pump so I'm guessing that the difference is not even close to relevant to anything at all being that there is a 900cc difference between the 2.6 and the 3.5l motors but virtually no difference in the fuel pumps. I think I will begin using an avatar now

Hi again Graham

So what will you do now? Is it safe to just stick the substitute pump in?