compression delima

[danny_p]

K jet system is old and mecanical  and sensitive to knocks,   it's not uncommon for it play up after you've done magor surgory on the car.

i think you would find it very worth while to do some basic checks,

system and controll pressure.  then injector flow   -  remove the injectors  and place them into glass bottels whilest still connected to there fuel lines,  then put a switch across the fuel pump relay so you can remotely turn the fuel pump on and off whilst looking t the injectors. 

wedge the metering head flap open and run the pump,   observe amount of fuel in each bottel after seat time ( eg 30 seconds ) also take note of the spray pattern.

on an old k jet motor  it's not uncommon to find injecrs spraying uneven amounts of fuel and one or maore injectors with a bad pattern as wel as system and controll pressures been out.   the whole lot dose need a good going over every now and again,  known a lot of 16vs  regain 20-25 bhp after the fuel system has had a good going over

[ianmaxtec]

injectors are new (well they were when I rebuilt the engine, app 20K miles ago). I am tempted to try a different plug (as suggested), will order some in and see how it goes. Im pretty sure the injectors are fine, dont know about the injection system, there does not appear to be much to adjust. where would I start with the metering head (assuming the injectors are OK)

[danny_p]

you have to remove the injectors  to measure flow.

there is an allen key beside each injector outlet to trim the fueling,  ( minor tweeks on these like 1/8th of a turn at a time )

first off i would look at the warm up regulator and chack the system and control pressures and that the wur is actualy functioning, then match the injector flows  and finaly set the CO up  then it should go much better and not pink