1.8 Questions for the masses Options

[rick 918-S]

I was helping my old high school pal attempt to get a 1.8 running. The car is his daughters. She really wants to take it on her drivers test. May be even this week. We had some strange stuff occur.

The car was purchased at Auction. It had an engine fire due to a cracked clamp on the cold start valve. The fire consumed the center of the engine harness. Through the generosity of Betty and Clay they received a parts box at no charge. Thank you again you two!

I came into the picture when they had everything installed and we attempting to get it running.

Turned out they accidentally broke the inlet on the cold start. So I was lucky enough to source one from Jim Hoiland. Thank you Jim!

So with this install it would crank and barely run. Fuel pressure was at 40ish PSI. My friend Lowell smoke tested the intake system. All was tight.

Once we had it firing barely.. Lowell pulled the plug on the AFM and the car raced to life. Weird I know.

Pulled the plugs and notice #3-#4 were wet with Gas. #2 was dry like it never got fuel and #1 looked normal.

Lowell ordered a set of Injectors. We believe due to the process of elimination two of the injector were stuck open and one was stuck closed. Noid lighted all injectors that they are getting signal.

Any thoughts on the reason the car kept running with the AFM unplugged? Lowell thought possibly the injector that were stuck one were being siphoned allowing the engine to keep running.

[wonkipop]

i know that the engine will run on the cold start valve alone.
it did on mine when we recommissioned it.
but in my case it ran for a short time only before it switched off - from memory about 10-20 seconds at most.
(none of my injectors were working, all were stuck - tested and cleaned but just restuck again, but the cold start was working). the plug was in the afm.

not sure on control of cold start injector.
if was open and not switching off then the engine will run so long as it stays open.