[DML] Hotstart (new accumulator and pump)

[Samuel <samuel_yahoo@xxxxxxxxxxxxx>]

I was having a hot start problem, the accumulator was known to be bad so it was replaced. The hotstart persisted so the check valve on the pump was also replaced. I still have a hot start issue and dont want to guess. No matter how long I crank, it wont start, it has to cool for about 2 hours. Doing a plug swap does not allow it to start, and did not allow it to start since I've had the problem. It should be noted, the hot start came with the car, it didnt show up recently.

I put a pressure tester on the system, as the tech manual shows on page 62. After running the engine and letting it warm up (about 30 minutes of running), the valve was closed to the line from the pressure regulator (so the guage shows pressure at the top of the distributor) and the engine turned off. The pressure dropped down to ~3.5 bar, then after about 10 minutes settled around 2.9 bar. I have managed to confuse myself as to what I am measuring. I am unsure if i'm measuring the control pressure, or the primary pressure.

If I am measuring the primary pressure, then that would mean the accumulator and check valve in the pump are good, so my hotstart is from something else (note, my distributor has been messed with in the past). If I am measuring the control pressure, then how do I measure the primary pressure (turn guage around? Thought that would measure pressure back to the tank).

Samuel





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