Car takes awhile to start *update

[jake2212]

I have a problem. Ever since I got my Maggie installed and tuned my car will take awhile to start sometimes. This only happens if it's been sitting for awhile, and I have no idea what is causing it. The car will crank over but won't start until after about 4-8seconds. Anybody have any insight?

[Bubble85]

Had a simalar problem it was a loose ground

[Twin2010]

Did you change injector size? My car and a few buddies cars had to take some cranking fuel out after installing bigger injectors. It would start right up cold in the morning then after it sat for a few hours it would crank a while to start. We pulled 20-25 percent fuel out of the cranking fuel and it fixed the problem. You might try that and see if it helps

[JANNETTYRACING]

Originally Posted by jake2212

I have a problem. Ever since I got my Maggie installed and tuned my car will take awhile to start sometimes. This only happens if it's been sitting for awhile, and I have no idea what is causing it. The car will crank over but won't start until after about 4-8seconds. Anybody have any insight?

What is your exact parts list and we can better help.

Ted.

[JANNETTYRACING]

Originally Posted by Twin2010

Did you change injector size? My car and a few buddies cars had to take some cranking fuel out after installing bigger injectors. It would start right up cold in the morning then after it sat for a few hours it would crank a while to start. We pulled 20-25 percent fuel out of the cranking fuel and it fixed the problem. You might try that and see if it helps

If the injector data is correct you never have to Fudge that tune that way.

Ted.

[jake2212]

here's a list of all the motor mods on my car

CAI intake
catch can
ported TB
LT headers
LS3 conversion
7.400 pushrods
BTR dual valve springs
GT9 cam
ZL1 fuel pump
ADM FPCM
80 lb injectors
Magnuson tvs2300
3" sw retro catback

[Nitroman28]

If you turn the key on for about 15sec and then try to start it does it start?

[JANNETTYRACING]

Originally Posted by jake2212

here's a list of all the motor mods on my car

CAI intake
catch can
ported TB
LT headers
LS3 conversion
7.400 pushrods
BTR dual valve springs
GT9 cam
ZL1 fuel pump
80 lb injectors
Magnuson tvs2300
3" sw retro catback

I suspect these are a brand of injectors that there is no Real Data available to enter in to your calibration and is the root cause of your hard starting.

There is also Some Idle control stuff that needs to be done when a cam is added to the combo.

You should also consider adding
ADM FPCM
ZR-1 Map sensor

Ted.

[jake2212]

Originally Posted by JANNETTYRACING

I suspect these are a brand of injectors that there is no Real Data available to enter in to your calibration and is the root cause of your hard starting.

There is also Some Idle control stuff that needs to be done when a cam is added to the combo.

You should also consider adding
ADM FPCM
ZR-1 Map sensor

Ted.

Already have the adm FPCM, forgot to mention that. What good would a zr1 map sensor do?

[jake2212]

Originally Posted by Nitroman28

If you turn the key on for about 15sec and then try to start it does it start?

I'll go try that now

[jake2212]

Originally Posted by Nitroman28

If you turn the key on for about 15sec and then try to start it does it start?

Tht worked, so I'm gonna try it again when I get home from work today to see if it was just a one time thing

[Nitroman28]

We'll I was wondering if your pressure is bleeding off and the pump is taking a little long to build pressure. If its still doing it you need to get your tune looked at.


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[jake2212]

Originally Posted by Nitroman28

We'll I was wondering if your pressure is bleeding off and the pump is taking a little long to build pressure. If its still doing it you need to get your tune looked at.


Sent from my iPhone using Tapatalk

What would cause that? Bad fuel pump?

[jake2212]

just did it again, turned the key for 15 sec, then cranked it and it turned right on.