range rover seem a bit flat on power

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flyingbanana
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range rover seem a bit flat on power

#1 Post by flyingbanana » Tue Apr 21, 2015 8:46 pm

hi all
ive a 4ltr p38 range rover runs well on gas with out much of a problem but
just resently I could not get any gas so drove round for a while on petrol
wow what a difference. is there something that needs cleaning e.g filter
or something that could be causing the power loss
andy

Gilbertd
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Re: range rover seem a bit flat on power

#2 Post by Gilbertd » Tue Apr 21, 2015 10:41 pm

Any idea what gas system? Single or multipoint?
'96 Saab 900XS, AEB Leo, sold
'93 Range Rover 4.2 LSE, Lovato LovEco, sold
'98 Ex-Police Range Rover 4.0, Singlepoint AEB Leo, my daily motor
'97 Range Rover 4.0SE, eGas multipoint, a project.....

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flyingbanana
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Re: range rover seem a bit flat on power

#3 Post by flyingbanana » Wed Apr 22, 2015 11:30 am

I think its multi point

Brian_H
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Re: range rover seem a bit flat on power

#4 Post by Brian_H » Thu Apr 23, 2015 8:34 pm

Any idea which multipoint it might be - if your not sure there should be an ecu somewhere with a sticker on it to identify the system - trace the wires back from the injectors to find it if you can't see it easily. The switch in the cabin might also give away a brand if nothing else.

There should be filters in the system - generally one near the solenoid by the vapouriser/regulator (you might have two of these on a larger engine) , and another in the line between that and the injectors. They aren't likly to be the source of the problem though unless they are very gunked up. Won't do any harm to change them.

If your struggling to identify the parts involved etc post some photos of the bits you can find and someone will be able to help, The advise on a single point/mixer type will be different to a multipoint install so start by verifing which system you have got.

How good are the spark plugs? Any idea when last changed?

Gilbertd
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Re: range rover seem a bit flat on power

#5 Post by Gilbertd » Fri Apr 24, 2015 9:28 am

Plugs wouldn't make that much of a difference, it would be more likely to misfire on gas rather than be down on power. Filters would only show at wide throttle openings when demand for fuel exceeds the amount that can get there. If the difference is that noticeable then there is definitely something wrong as there should be so little difference is power output that you would only be able to tell by doing a drag strip run against a stopwatch. Simply driving around you wouldn't notice it but, as Brian says, depending on what system you have will depend on where you start looking.
'96 Saab 900XS, AEB Leo, sold
'93 Range Rover 4.2 LSE, Lovato LovEco, sold
'98 Ex-Police Range Rover 4.0, Singlepoint AEB Leo, my daily motor
'97 Range Rover 4.0SE, eGas multipoint, a project.....

Proud to be a member of the YCHJCYA2PDTHFH club.

LPGC
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Re: range rover seem a bit flat on power

#6 Post by LPGC » Sun Apr 26, 2015 3:50 pm

Not worth saying too much at this stage until we know what system he has.

A fair proportion of P38s that come in with similar issues have problems with the lambda sensor(s).

Simon
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geoffg
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Re: range rover seem a bit flat on power

#7 Post by geoffg » Mon May 04, 2015 4:27 pm

Please excuse me for jumping in to your thread. I have a 2000 P38 4.0 (Bosch) with Tartarini multipoint LPG. Just recently I have found a loss of power especially when going uphill. If I switch to petrol, it goes uphill with no problems at all. This seemed to happen suddenly, not gradually over a few days. I've changed all the spark plugs to no avail.
Geoff :?

LPGC
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Re: range rover seem a bit flat on power

#8 Post by LPGC » Tue May 05, 2015 1:45 pm

Been a while since Flyingbanana gave us an update.

Tartarini Etagas or SGI Geoffg?

Simon
Full time LPG installer
Servicing / Diagnostics / Repairs to all systems / DIY conversion kits supplied with thorough tech support
Mid Yorkshire
2 miles A1, 8 miles M62,
http://www.Lpgc.co.uk
Twitter https://twitter.com/AutogasSimon
07816237240

geoffg
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Re: range rover seem a bit flat on power

#9 Post by geoffg » Wed May 06, 2015 11:13 am

Not sure what system is fitted as I havn't got any paperwork for it and I'm unable to contact the guy who installed the system. How would I tell by looking under the bonnet?
Cheers,
Geoff

classicswede
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Re: range rover seem a bit flat on power

#10 Post by classicswede » Wed May 06, 2015 7:24 pm

Just take some photo's of the LPG parts under the bonnet and we will be able to work it
http://www.classicswede.com/
http://www.classicswede.co.uk/LPG/cat17 ... 10800.aspx

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DIY LPG Kits

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