Initial Starting Problems

[NeoMishMoo]

Recently had a (supposedly) better m20b27 dropped in my car but now it won't start. I originally thought it might be having trouble because of the low temperatures (even though it never had that problem in the past). The car won't start after it has been sitting for about 8 hours. I will crank and crank on it and it will finally start. It will start right up if I spray a little bit of ether into the intake boot, or if I have just been running it. Like I said it can sit for a couple hours and start fine. It just isn't getting fire. Mechanic said it was the injectors but I rebuilt and tested them before putting them in.

Distributor and rotor have only couple thousand miles on them, spark plugs are the bavauto performance, spark plugs are new.

It has been too cold for diagnosis but tomorrow is my only day off and hopefully I can get it fixed so that I can tackle another one of the many problems plauging this poor car.

Read somewhere that someone had problems with their injector plugs, I'll clean those connections first.

I've got a bentley but I thought that since it will start after having been started someone may have some advice to help speed up the diagnosis problem.

I'm thinking maybe the coil isnt charging, but then why would ether help...

[jlevie]

A more likely cause, since the engine will start with starting fluid, would be intake leaks.

[NeoMishMoo]

But it will also start up just fine after it has initially started, I can shut it right off after getting started and it will start right back up wouldn't intake leaks cause constant problems?

[jlevie]

A cold engine requires a richer mixture. Even a small intake leak can cause cold starting problems and the problem may not be evident on a hot start. There could be other causes of this, but until intake leaks are totally ruled out there not much point in investigating the other possibles. The only way to be certain of locating intake leaks is to have a shop run a smoke test on the intake.

[NeoMishMoo]

Alright well then instead of trying to figure this one out I'll just go to the mechanic who finished my engine swap for me, even though he probably doesnt even have the ability to do a smoke test, Wish I had a garage so that I could keep poor mechanics from touching my car.

Oh yeah my car also has been having a hesitation problem, I'll give it gas and it won't really go so I floor it and still nothing for about 2 seconds then it throws my head back, so maybe the problem is with a vacuum leak, this problem improved greatly after the engine swap (m20b27 to m20b27) but it still does it a little bit.