1.7 dies right after starting Options

[averagejoe71]

my 1.7 dies when it starts. Ill turn the key and it will shortly after stop and if i touch the pedal alittle within the small time frame it dies. Does anyone have any ideas of where to start checking to see whats the problem. All help is appreciated.

[BeatNavy]

Likely more than one thing going on, which is not surprising. As far as I know, you still haven't tested the CHT and CHT wiring closely. That could also cause this issue. Or it could be complete fuel starvation, too.

Was the MPS diaphragm ruptured when you cracked open the housing? If it's a matter of getting the repaired MPS in spec I can help tune it. I also have a generally serviceable (I believe) 049 MPS which should work for testing purposes. PM me if want help. In the meantime, I'd recommend at least two checks:

1. Thoroughly checking CHT, the connection, and the wiring all the way to the ECU.

2. Checking to see if fuel injectors are actually getting fuel and firing - pull one out and put it in baby food jar (or something similar) and crank the engine. Is there fuel?

I like my D-Jet, but I've replaced everything on it over the last couple of years in an attempt to get it working well. That includes fuel pump, ECU, MPS, wiring harness, CHT, T1, fuel pressure regulator, throttle body, TPS board, all hoses, etc. etc. Unless you're pretty well versed in modern FI systems, you're also going to have challenges. See the threads currently here on the board about Microsquirt conversions. It requires some knowledge, creativity, and patience to get that working on our cars.

Hang in there.