Only went to get petrol, but I always like to have at least half a run out too, so went "around the block", rather than just to the petrol station and back.
Today : Partly Cloudy
Conditions : Bright, light drizzle later
Temp : 14°
Journey : Petrol station, the long way!
Distance: 6 miles
MPG is looking like an appalling 20mpg. Which is WORSE than when the brakes were binding! But she seems to run smooth enough.
Checked compression, seems a very healthy 125psi in each cylinder, so no issue there (as I understand it the specified 7.2:1 is approx 125 psi). Also replaced spark plugs, only because I have had a new set knocking around for a while and the old ones have suffered through all the head gasket / valve seals issues from the long distant past. So maybe they needed replacing, maybe not. Mixture is still slightly rich as they were a bit sooty, but nothing major. So bothered? Not really!
There is clearly some improvement that COULD be made, but ......
20mpg is too high consumption for a 1200cc motor, although the Somerset bodyshell is a fair old lump for a mere 1200cc's to lug around. Is there another petrol leak perhaps?
ReplyDeleteI once had a Vauxhall Viva van that had a pin hole halfway up the petrol tank, consequently consumption figures baffled me as they were very poor from a full tank (as it was leaking and evaporating via the pin hole) down to half full, but once below the hole consumption improved!