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LPG on the yamaha V8 engine - XC90

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Old Jun 16th, 2019, 09:30   #31
classicswede
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You have to keep the petrol there.

1) the engine needs to start on petrol
2) should you run out of LPG you have petrol backup
3) the engine ECU needs to see correct petrol pressure in the fuel rail
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Old Jun 16th, 2019, 13:01   #32
AUS T5
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Thanks for that C S
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Old Nov 23rd, 2021, 12:01   #33
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Thanks this maybe usefull as I had a high pump fuel pressure failure, I'm not sure if related.

For record - I have two 2007 XC90 4.4 V8 one with Prins LPG & one without.
(Idea to do both once I know the reliability etc)

I have yet to use LPG car much yet. I took 6,7th seat out one tank there and another under the spare wheel to increase range.

So far it seems to work well. Apart from the fuel pump issue. (now fixed but unfort thieves broke into yard and stole Cat converters on 6 cars incl mine)

Great Chat group. I'll report as things go..
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Old Nov 23rd, 2021, 12:06   #34
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Quote:
Originally Posted by classicswede View Post
A fuel return line is the only solution that works every time
Thanks for your info .. on fuel return line. I wonder if thats my issue.

I'll report back.

BTW Do you have XC90 LPG 4.4 V8?

Is it a Prins 2 system ?

How you enjoying it?

Anyone else have XC90 / 80 same engine with Prins?
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Old Nov 23rd, 2021, 12:09   #35
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Default Extra Fuel Tanks

I took out 6,7 seat and put a tank in there. I raised floor slightly.

Unfortunately only after did I find another solution for cylinder tanks about 800mm long and 180mm / 200mm diameter.

My guess is four or maybe five of these would be a better solution.

Not lose much boot space.
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Old Nov 23rd, 2021, 22:55   #36
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Hi Nice

Do you still have the above mentioned car ?

Best Rgds
Bruce
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