idle problems and late boost

[Jman]

ok, I went ahead and got the injectors cleaned and rebuilt.

the injector service report shows that in the test before cleaning they flowed
81 ml spray pattern: Bad
84 ml spray pattern: Fair
86 ml spray pattern: Bad
82 ml spray pattern: Bad

after cleaning and rebuilding

90ml spray pattern: Good
90ml spray pattern: Good
90ml spray pattern: Good
90ml spray pattern: Good

so it seems as if i've got a pretty dam good matched set of injectors.

this test was done on a cold motor so results are probably off a little.

now the bad news. I did a leakdown test. I first tried cylinder #1. I could only get about 82% on that one. And i could feel air coming out of the number 2 spark plug hole.

I did the leakdown on number 2. I didn't have #2 at exactly TDC so it got pushed down, when I pulled it back up whiles till under pressure, I got like 40psi compared to the 100psi that was being put in. i let the pressure out and positioned it at tdc on number 2 and hooked the pressure up again, and nothing. i tried turning the crank a few times while still under pressure, I never got more than like 5psi in number 2. so something is gone. possibly headgasket between 1 and 2 seeing as air was coming out of number 2 spark plug hole while number 1 was pressurized.
i didn't even try the other 2, no point really

[GAboySVO]

Sorry to hear that. Sounds like the dirty injectors led to a lean condition and at the very least blew a head gasket. Hopefully, it is not more than that.

Sounds like it is time to dig into the motor and pull the head.

Good luck.

[Jman]

yeah, i've got some stuff sitting in the garage that i've been waiting for something like this to happen so I could put the go ahead on it.

Oval port head, bigger valves, better springs, etc.

hehe the car was still faster than my friends 5.0 and mine was only running on like 3 or 2.5 cylinder s or so