Alternate injection pumps (1 Viewer)

[dsaw]

I have a 2004 Hilux LN166 3L, and the centrifugal governor is frozen, so it won't go over 2200 rpm. I use it all the time as a work truck on gravel roads, so it's not really much of a limitation since it almost never sees the open road. However, I'd like to eventually get it fixed. I could pull the pump, send it off, and hope someone can find the parts for it; but I'm sure it would take forever and no guarantee the parts are even available for it. If I look at the parts diagram on Amayama, it lists 3 possible pumps. Mine is identified as a high altitude variation. Then there's a "normal" version, and an Egypt version. That high altitude pump appears to be very rare, but the "normal" one is available for a reasonable sum ($1300 for a Denso from Australia, or gamble on a $700 one from China, I'd buy the Denso in that choice). Is there any reason the "normal" one shouldn't be a direct swap out?

 

[GreenPump]

The high altitude compensator leans out fuel with lower atmospheric pressure. At least that is how it works on the older denso rotary pumps from the 90s. Theoretically swapping in a non-compensated pump shouldn't effect much. If you are at high altitude (5000ft plus) like I am, 3L will run a bit more smokey with unburnt fuel. It is incomplete combustion caused by lower air pressure.

 

[TheBussman]

I have a 2004 Hilux LN166 3L, and the centrifugal governor is frozen, so it won't go over 2200 rpm. I use it all the time as a work truck on gravel roads, so it's not really much of a limitation since it almost never sees the open road. However, I'd like to eventually get it fixed. I could pull the pump, send it off, and hope someone can find the parts for it; but I'm sure it would take forever and no guarantee the parts are even available for it. If I look at the parts diagram on Amayama, it lists 3 possible pumps. Mine is identified as a high altitude variation. Then there's a "normal" version, and an Egypt version. That high altitude pump appears to be very rare, but the "normal" one is available for a reasonable sum ($1300 for a Denso from Australia, or gamble on a $700 one from China, I'd buy the Denso in that choice). Is there any reason the "normal" one shouldn't be a direct swap out?

pretty sure it would be just fine. If you do go to high altitude and floor it you might get some smoke/ high EGTs. You can always turn down the pump if it's too smoky. There are alot of good shops out there that could fix your current pump I'm sure. I bet most if not all the parts are still available.

 

[Eurasiaoverland]

How did you make the diagnois that the governor is the cause of the issue? If it is the case, through corrosion or gumming up of old fuel, it's likely other parts will also need to be replaced.

The high altitude compensator is pretty useless in my opinion - all it does is reduce fuelling, just the same as easing back of the accelerator when you start to see black smoke.

I would be highly suspect of $1300 for a supposedly new, genuine Denso unit, though maybe you've found a great offer. Sounds either like a fake or possibly a rebuilt unit, for which you'd need to send your old pump or pay a core charge.

If it were me, I would drop it off at a diesel specialist and ask them for an assessent. Only if it needs multiple new parts would I start looking for a replacement unit. If you ae mechanically inclined you could partially strip it down yourself and then either put it back together and get a shop to rebuild it, or trash it if it's ruined.

 

[dsaw]

I ended up getting the $1300 pump. It looks like a brand new Denso pump. It was sold by an Australian ebay auto parts store that has 2051 transactions and a 98.5% approval rating; so I figured worth a gamble. I haven't had a chance to put it in yet. I suspect it's the governor because it tops out at 2300 rpm. Runs great till then, and just stops. It's not the pedal travel stop, checked that.

 

[Eurasiaoverland]

I ended up getting the $1300 pump. It looks like a brand new Denso pump. It was sold by an Australian ebay auto parts store that has 2051 transactions and a 98.5% approval rating; so I figured worth a gamble. I haven't had a chance to put it in yet. I suspect it's the governor because it tops out at 2300 rpm. Runs great till then, and just stops. It's not the pedal travel stop, checked that.

Can you share a link to their eBay shop? I'm interested to see what they have. Thanks.

 

[dsaw]

Not a problem:

Ebay store:

Security Measure

www.ebay.com

I haven't visited it, but when I went back to their store, I noticed they also have a direct address at dieselpartsaustralia.com

They're also pretty responsive.

I went new thinking a rebuild would probably have a similar cost, but would potentially take far longer if they had to order any parts from overseas. And I use this truck as my field truck at work (where I'm on gravel roads the whole time, so the 50mph limit doesn't really matter), but I don't want to be without for an unknown amount of time.

 

[Eurasiaoverland]

Not a problem:

Ebay store:

Security Measure

www.ebay.com

I haven't visited it, but when I went back to their store, I noticed they also have a direct address at dieselpartsaustralia.com

They're also pretty responsive.

I went new thinking a rebuild would probably have a similar cost, but would potentially take far longer if they had to order any parts from overseas. And I use this truck as my field truck at work (where I'm on gravel roads the whole time, so the 50mph limit doesn't really matter), but I don't want to be without for an unknown amount of time.

Nice find, thanks. Indeed looks like a legitimate seller of genuine Denso parts. Would be great if you keep the thread updated and show us some pics of that nice new pump.