fuel pressure test
 

89 190E 2.6 Need to do a fuel pressure test How is it done ? and what psi am I looking for ?

Among others Harbour Freight.com carries a low price CIS fuel testing kit.
A pre requisite to testingfuel pressures
mak

I found a test gauge/hose/valve kit on Ebay for a good price (under $30 as I remember). Basically you have to hook to the top and bottom chamber fittings on the fuel distributor, and have a switchover valve system to the gauge. Do a search here, but my memory says the pressures are about 75 PSI, with one chamber being about 5 PSI lower than the other - this is the critical measurement, the deltas between the upper/lower chambers. This controls the fuel flow to the injectors. There are some very definitive articles in the archives here on the procedure.

DG

Fuel pressure test
 

I made a tester as far as I can see there only one port to plug the tester in to it next to the main line coming in to the fuel dist, ok got a reading of 60 psi Key on motor not running drop to 4o psi as soon as the key is off one hour later it zero confused:

Some of those rigs have chk valves for american iron. You might have to take it out.

If you want to adjust the EHA.. it will depend on gauge accuracy.

pressure gauge
 

I think the line I was thinking is the main was the return line it the line to the pressure regulator I plug my gauge in next to that