https://www.nopistons.com/forums/pub..._DIR#>/sad.png got a problem i don't understand. compression doesn't bleed off if left parked but if you start up and shut down after a very short period you get the "spinning rotor" deal. atf injection fixes it but what causes this? it's a pain in the tail when i forget and shut it off before running at high rpm for a bit. it's an 88 non turbo. any ideas?

its flooding, its very common. the main culprits are vacuum leaks, old or worn spark plugs



mike

It would have to be really flooded to have to pull the plugs and do the atf trick. How often do you start the car and not let it warm up to operating temp. That one thing I learned the hard way, I let mine run for 5 to 10 minutes just to back it out of the garage. Do you try the fuse trick first, before you pull the plugs?

Watch how much of that fuel is getting into your oil too. Very many of those bad floods and it could get pretty thin.



There's also the fuel pump cut switch hack and I also heard something about removing the ball/check valve in the pump itself. You'll have to crank longer though.



Just thought I'd throw that out there. https://www.nopistons.com/forums/pub...IR#>/smile.png

From what I understand from this post, after you beat on the engine for a period of time(like a high-speed run up a mountian) and shut it off as soon as your done it doesn't start? If I understood that right then here is your problem: The oil is still very very hot and when its hot like that, it REALLY thins out, or its less viscous(spell?). Basically when oil gets hot it gets more liquid like rather then jell like, so it won't seal as well.



Michael

i let my car warm up for 15 minutes until the water is warm.. i never ever never ever just turn on my car and drive it after 1-5minutes never

i have done it plenty of times with no problems

the oil and water are warm after 1-3 minutes of running...letting a car warm up for 15 minutes is a waste of time and gas. We actually tried this at the shop as an experiment. We put a case of 20-50 outside over night in the snow....it was 120 F after 2 min of idling@850prm. and the water temps stablized@185 after 3 min of idling (this was done on a 2 liter cosworth YB)



it sounds like you have a flooding problem..not compression

my car flooded really bad once and i had to do the spark plug thing... just make sure u remember to take those fuses out!