genscripter
Full Access Member
I don't think that crack would extend to the interior of the intake, but maybe. I looks like someone torqued the bolt down too much and damaged the bolt hole. I'm sure it's ok as is. If you wanted to fix it cheap, I would chip out any loose metal and replace it with JB weld, but you'd have to be super careful to not let the JB weld pour into the bolt hole. Maybe shore it up with a plastic straw or something. IDK. Have to think about that.
Whenever I had power loss or stalling with my IDI, it was 99% of the time due to low fuel pressure from the lift pump. Once you purge the lines, and you have no leaks, the IP can pull a little on its own to feed the injectors. But if you have air in the system, the darn IP can't suck up anything. The lift pump provides some external fuel pressure to feed the IP when it needs fuel. At idle, it doesn't need much pressure. But at any RPM's, the pressure requirement increases. The way your IP shuts down with some RPM's makes me think you have low fuel pressure and it's starving for fuel when you ham on it. One way to resolve this is to install a pressure gauge on your system between the filter head and IP inlet, but that's kind of tedious.
I eventually gave up last year and bought a dedicated fuel pressure gauge that sits on my dash, just for **** like this. Knowing that I have pressure solves a lot of unknowns when trying to diagnose a cranking, idling, or performance issue.
Whenever I had power loss or stalling with my IDI, it was 99% of the time due to low fuel pressure from the lift pump. Once you purge the lines, and you have no leaks, the IP can pull a little on its own to feed the injectors. But if you have air in the system, the darn IP can't suck up anything. The lift pump provides some external fuel pressure to feed the IP when it needs fuel. At idle, it doesn't need much pressure. But at any RPM's, the pressure requirement increases. The way your IP shuts down with some RPM's makes me think you have low fuel pressure and it's starving for fuel when you ham on it. One way to resolve this is to install a pressure gauge on your system between the filter head and IP inlet, but that's kind of tedious.
I eventually gave up last year and bought a dedicated fuel pressure gauge that sits on my dash, just for **** like this. Knowing that I have pressure solves a lot of unknowns when trying to diagnose a cranking, idling, or performance issue.