Power loss
- Thread starter CRS
- Start date
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Datatek
Well-Known Member
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- 45,024
- Location
- Near Poitiers SW France
I have had something like that on a different vehicle, it was a blocked fuel tank breather causing a partial vacuum in the tank.
Datatek
Well-Known Member
- Posts
- 45,024
- Location
- Near Poitiers SW France
- Posts
- 12,660
- Location
- Sud ouest France !
Blocked fuel filter or worn fuel pump?
Any damaged fuel lines underneath?
Any damaged fuel lines underneath?
Marshall8hp
Well-Known Member
- Posts
- 297
- Location
- Sydney
The fuel pump is under the vehicle, RHS close to the rear seat.
It could be tank vacuum, it could be a clogged fuel filter (there is one in the pump as well as the one in the engine bay, you can twist the bottom off the pump the get at it), it could be a tiny bit of rubbish sitting against the fuel inlet needle valve on one carbie (had all happen to me, and the last one takes some working out
). Another issue I had was rubbish in the fuel tank which would clog the inlet after a few minutes and the vehicle would lose power. Once you stopped for a few minutes it was fine again as the rubbish fell away from the inlet. That was tank out to clean about 3 times to finally get it all. (And it was a 150l long range steel tank too ......).
Other thoughts, it could be a coil dying as it gets hot, although that is usually accompanied by the engine missing. Also has someone fitted an external resistor to the coil? They run a 7V coil but the resistance is internal to the vehicle wiring. Some people don’t realise this and fit an external resister and suddenly you have a 7V coil trying to run on 4V.
It could be tank vacuum, it could be a clogged fuel filter (there is one in the pump as well as the one in the engine bay, you can twist the bottom off the pump the get at it), it could be a tiny bit of rubbish sitting against the fuel inlet needle valve on one carbie (had all happen to me, and the last one takes some working out
). Another issue I had was rubbish in the fuel tank which would clog the inlet after a few minutes and the vehicle would lose power. Once you stopped for a few minutes it was fine again as the rubbish fell away from the inlet. That was tank out to clean about 3 times to finally get it all. (And it was a 150l long range steel tank too ......).Other thoughts, it could be a coil dying as it gets hot, although that is usually accompanied by the engine missing. Also has someone fitted an external resistor to the coil? They run a 7V coil but the resistance is internal to the vehicle wiring. Some people don’t realise this and fit an external resister and suddenly you have a 7V coil trying to run on 4V.
- Posts
- 12,660
- Location
- Sud ouest France !
Get the engine hot and when it cuts out, check you have sparking on all the plug leads, are they individual coils or packs?
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