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[TECH] Fuel additives



My farrier, who drives a P reg Toyota van with about 150k miles, has just been.
The injection pump is suffering from internal problems (dies at idle, tends to surge once running), which have been tentatively diagnosed as internal seal failure due to low sulphur diesel. I'll report further after I've next seen him.
OK, it's not an LC engine or pump, but it has similar origins. Me'thinks I should be adding some lubricating additive to the fuel ....
Christopher Bell
Devon, UK
1996 1HD-FT
Hi Christopher,
There is an issue with the early seals used in the Japanese fuel pumps
where the seals don't expand as much as they normally do with the older
higher sulphur fuels. This can result in visible external leaks as
well as internal leaks that would cause rough running.
I guess fuel additives could prevent this, although it only really
affects the earlier seals - not when the cutoff point was.
Milner to a good cheap seal kit if he is feeling brave enough to swap
the seals himself.
Julian Voelcker
Mobile: 07971 540362
Cirencester, United Kingdom
1994 HDJ80, 2.5" OME Lift