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Old 11-24-2014, 04:55 PM   #1
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Default car won't start. msq-log attached

My car was working perfectly a few weeks ago, now it will not start. I messed with req fuel and lowered it down and then up to see if cranking pws were too rich or lean. I can crank and crank and no dice. It won't even try to start.
I pulled the spark plugs and they are almost black and wet. I let the engine ventilate for 3 hours and put the plugs back in and nothing, it will crank but it does not fire at all.

I am running rc 550 injectors, mspnp1.
Attached Files
File Type: msq CurrentTune.msq (41.6 KB, 42 views)
File Type: msl crank 3.msl (465.4 KB, 57 views)
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Old 11-25-2014, 01:42 PM   #2
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Are you getting spark? If not, determine why.
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Old 11-25-2014, 02:24 PM   #3
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Yes I have spark. I think I'm going to start over. Get the cranking pws from diyautotune and do the math for the 550 injectors
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Old 11-27-2014, 12:24 PM   #4
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Does anyone have a suggestion? I have spent several hours trying to start the car, changed the cranking PWs, tried using a lower Req fuel...all it does is backfire like crazy. Am I doing something wrong? How do other people start their cars in cold weather?
The plugs are soaked in gas, I take them off, dry them, use compressed air to dry the pistons, still wont start. I do have good spark....
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Old 11-27-2014, 02:33 PM   #5
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My coolant sensor is reading the wrong temp, it says 60F and I tested the coolant with a thermometer and it reads 42F, MAT is 42F as well.
So in other words, it should be lean, not rich..but it is backfiring
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Old 11-28-2014, 02:36 AM   #6
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look in your cranking setting and check your TP % flood clear. I would use the flood clear option to help the car start. What is your pulse width when cranking.
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Old 11-28-2014, 02:08 PM   #7
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I have the flood clear set at 170adc, full throttle is 192 on my car. I don't remember the pws off the top of my head, but I attached the msq
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Old 11-29-2014, 06:17 PM   #8
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I changed the spark plugs and it started on the 1st crank after working on it for 2 weeks. The old spark plugs had spark...what could have happened?
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Old 11-29-2014, 07:36 PM   #9
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Did you check the gaps on the old plugs?
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Old 11-30-2014, 11:10 AM   #10
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The gaps were set to 0.028" buy I am running stock ignition. I left the gap on the new sparks the way they come in the box but now it backfires when cruising so I'll need to close the gaps a little or just install my cops
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Old 12-02-2014, 12:20 PM   #11
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Quote:
Originally Posted by btabor View Post
The gaps were set to 0.028" buy I am running stock ignition. I left the gap on the new sparks the way they come in the box but now it backfires when cruising so I'll need to close the gaps a little or just install my cops
Most of the COP coils I've seen out there are more of a cosmetic upgrade than anything else. They may be fractionally hotter than the stock coils, but not by much.
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