Losing power on LPG

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JumboBeef

New Member
Posts
52
Hello,

I'm new here and desperate!

I own a 1991 RRC V8 auto LPG (had it for a couple of months). I also own a 1996 Disco V8 auto LPG (had that one for three years).

I'm losing power on the RRC. This is the problem:

Fine until a couple of weeks ago, on both gas and petrol.

Then, starting a couple of weeks ago, when on gas, it sometimes it runs fine, other times it feels like someone has fitted a remote control rev limiter. Runs fine on petrol, no issues at all.

Yesterday, I took it out for a drive (covered about 25 miles, town and country). First five miles or so (NSL roads), no problem, freely reved to over 4,000. Then, suddenly, it will not rev over 3,000 (approx). Try to rev it over this, and the engine dies (but does not stall, just drops back to tickover). Take your foot off a bit, and it will rev up to (but not above) the 'limit'.

Then it will clear and rev freely, then it will not rev over 2,000 revs, then OK, then not over 4,000, then fine, then not over 1,500 rev. And so on. And on.

If you stop when it will not rev, put it into netrual, it will rev as high as you want, no problem. Back into D, then you have a rev limiter again.

I'm no expert, but I don't feel there is a LPG blockage: surely the problem wouldn't come and go like this? Remember, if I cannot rev it above 1,000 in D, if I drop it into N, I can rev it freely to any rev speed.

New leads and plugs fitted last week . Haven't touched the cap, arm or coil yet. I even put LPG from a different station to my usual one in the tank tonight to see if that was the problem (no difference). I am losing some water (not a lot) but this might just be a red herring.

Yesterday, I decide to take my vapouriser apart and clean it out. I have noticed there is oily gunk beneath it, so I was guessing that a PO had already emptied it out before and that was all there was to this problem.

An hour later, and two knackered hands later, I remove the plug at the bottom......and nothing comes out. So I remake all the joins again, fire it up and go for a drive. At first, it was perfect. Then a few miles down the road, the same issue came back.

Can anyone give me advice on what is wrong/how to fix it?

Thanks.
 
Hello,

I'm new here and desperate!

I own a 1991 RRC V8 auto LPG (had it for a couple of months). I also own a 1996 Disco V8 auto LPG (had that one for three years).

I'm losing power on the RRC. This is the problem:

Fine until a couple of weeks ago, on both gas and petrol.

Then, starting a couple of weeks ago, when on gas, it sometimes it runs fine, other times it feels like someone has fitted a remote control rev limiter. Runs fine on petrol, no issues at all.

Yesterday, I took it out for a drive (covered about 25 miles, town and country). First five miles or so (NSL roads), no problem, freely reved to over 4,000. Then, suddenly, it will not rev over 3,000 (approx). Try to rev it over this, and the engine dies (but does not stall, just drops back to tickover). Take your foot off a bit, and it will rev up to (but not above) the 'limit'.

Then it will clear and rev freely, then it will not rev over 2,000 revs, then OK, then not over 4,000, then fine, then not over 1,500 rev. And so on. And on.

If you stop when it will not rev, put it into netrual, it will rev as high as you want, no problem. Back into D, then you have a rev limiter again.

I'm no expert, but I don't feel there is a LPG blockage: surely the problem wouldn't come and go like this? Remember, if I cannot rev it above 1,000 in D, if I drop it into N, I can rev it freely to any rev speed.

New leads and plugs fitted last week . Haven't touched the cap, arm or coil yet. I even put LPG from a different station to my usual one in the tank tonight to see if that was the problem (no difference). I am losing some water (not a lot) but this might just be a red herring.

Yesterday, I decide to take my vapouriser apart and clean it out. I have noticed there is oily gunk beneath it, so I was guessing that a PO had already emptied it out before and that was all there was to this problem.

An hour later, and two knackered hands later, I remove the plug at the bottom......and nothing comes out. So I remake all the joins again, fire it up and go for a drive. At first, it was perfect. Then a few miles down the road, the same issue came back.

Can anyone give me advice on what is wrong/how to fix it?

Thanks.

Sounds like it's being starved of fuel. How to fix it, not a clue.
 
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