Need to measure the fuel pressure on my 1.8 kr, what pressure should I be seeing at the metering head? Pretty sure I've got no leaks so it looks like either the pump or the metering head are playing up [:^(]
to test the system it's best to start with a cold car you fit the valve /pressure gauge start the from cold with valve open the pressure shoud go from (1.35 to 1.65 bar at 0min to 3.45 to 3.75 bar after 2.5 min) then check the system pressure close valve it shoud read (4.5 to 5.2 bar) next open the valve then switch off the engine off and leave for 10 minutes it shoud not be less than 1.8 bar if is between 1.8 and 2.0 bar wait a further 10 minutes it shoud not be less than 1.6 bar if it fails this last test it is ever the non retun valve or a leak
the Bentley book may have different fig's as the us cars use different pressures unless it gives both us and uk
it may help if you give him a whole answer the pressure you have given you have to unplug the WUR to do that test and take the pressure at give engine temp the above is the cold control pressure test of cars in cold climates like canda You also get a other test to do with altitude You may see the say not for California cars As we in the UK don't have that cold a climate or that high a altitude We don't need to do that tests for uk cars you test as i have said above So nothing to do with emissions but all to do with the environment the car is in
