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View Full Version : Puma 2.2 Fuel Rail Pressure?


Zeros
16th March 2019, 11:43 AM
Puma 2.2 engine clatter is noticeably louder after 96,000km

Hence seeking advice re fuel rail pressure...what should it be?

at idle?
at 100 kmhr / 2200rpm?
Grappler
16th March 2019, 12:54 PM
Puma 2.2 engine clatter is noticeably louder after 96,000km

Hence seeking advice re fuel rail pressure...what should it be?

at idle?
at 100 kmhr / 2200rpm?

I will set up my ultra gauge to read rail pressure and let you know what my 2.2 reads, later today
justinc
16th March 2019, 01:06 PM
At idle, low 20s.. I would be running some CRD cleaner/ lube through the tank, or even 200mls of non synthetic 2 stroke oil. Also worth a pilot relearn after 96k.
Grappler
16th March 2019, 04:59 PM
Not sure what the specs are but this what UG reads from PCM

3.5K psi at idle
21K psi at 2200 rpm flat road 100kph
justinc
16th March 2019, 05:30 PM
31kpsi is about 22k Kpa
Zeros
16th March 2019, 09:18 PM
Not sure what the specs are but this what UG reads from PCM

3.5K psi at idle
21K psi at 2200 rpm flat road 100kph

Thanks very much for checking that Grappler. That’s about the same as I’m getting on UG too.
Zeros
16th March 2019, 09:25 PM
At idle, low 20s.. I would be running some CRD cleaner/ lube through the tank, or even 200mls of non synthetic 2 stroke oil. Also worth a pilot relearn after 96k.

Thanks JC, I will try some CRD. Hopefully that will do the trick as it sounds like my psi/kpa is about right. ...assuming 34-3500psi (approx 24000kpa) would be within normal operating spec at idle?
ramblingboy42
17th March 2019, 09:50 AM
At idle, low 20s.. I would be running some CRD cleaner/ lube through the tank, or even 200mls of non synthetic 2 stroke oil. Also worth a pilot relearn after 96k.

Interesting that the 2 stroke mix comes into the equation again.

I did it all the time with my D2 td5.

It was originally considered not to add 2 stroke to the common rail engines and I'm very interested why the change of heart Justin.

It did the td5 no harm over 100s of 1000s of kms.

I would assume injector pressures in the td5 would be as high as the common rails?

This was originally one the reasons not put any additives into your common rail diesel fuel.

Any enlightenment would be much appreciated.

Den