stalling/hard Start/plugs?

[stkjock]

Somewhat a general question.

Current setup
4L Whipple
Whipple Monoblade TB
168# injectors
Fore triple return fuel
TR6 @ .028

When the car has sat for 2-6 hours after having been driven, she'll crank and fire up, revs to 1500 or so (typical for the tune) then dies. I can try it 5-6 times and same result. Only way to keep her running is to use the accelerator pedal to keep the revs up and after 20-30 seconds the car will find the idle.

If the car is stone cold or hot it finds the idle without issue.

I doubt its the tune as this did not happen for the first 6 months or so since the motor was done and the tune was checked and adjusted.

Thoughts as to what you think is the cause or solution.

 

[JeremyH]

I would check out all the spark plugs/cops and clean the maf for starters Dave.

 

[94tbird]

mine does the same. weve discussed before. its a temporary foul situation. although mine happens far more often after short runs than say a cruise or trip down the highway

 

[stkjock]

Ron - I know we have, however this is different than what we talked about, it happens hours later and not after a few mins of running.

Jeremy - I did think of swapping the plugs as they are cheap, unlike the 3V set up. The car seems to run fine all the other times.

 

[94tbird]

I did think of swapping the plugs as they are cheap, unlike the 3V set up.

hey now. SOME of us 3v'ers have the cheap plugs too ya kno. 08+ iirc

 

[94tbird]

and we just changed those plugs....what can they have on them 1000 miles tops?

 

[stkjock]

Yes, we changed them in mid April I'd guess 1000-1200 miles on them. This issue also seems to coincide with that swap. As I don't recall it occurring before.

As to the price mine are less then $2 a plug.

 

[94tbird]

who gapped them.......

 

[stkjock]

I doubt it's the gap. I did gap them, check them twice, and I get no blow out up top.

 

[94tbird]

but you DID change the gap over what was previously in there. what can it hurt to gap them down further back to where they were and see if the issue follows.

 

[stkjock]

I'm not sure. IIRC they may have been .025, now .028. I can check to see if I have an email from L&M that shows the gap.

 

[94tbird]

you definitely increased the gap, i remember that much. we talked about it in depth before we put them in.

 

[Fake_Snake]

i remember me and ron pulling my plugs once before in his garage ... a few years back.. how time have flown ...

off topic some what.. stk. in my tune it will idle @1500 then settle... is this typical for the 5.4 4v's?

 

[94tbird]

i remember me and ron pulling my plugs once before in his garage ... a few years back.. how time have flown ...

off topic some what.. stk. in my tune it will idle @1500 then settle... is this typical for the 5.4 4v's?

holy crap yea we did, then you left a one wheel peel in my street in front of my driveway. its fading finally but its still there hahahaha

 

[stkjock]

i remember me and ron pulling my plugs once before in his garage ... a few years back.. how time have flown ...

off topic some what.. stk. in my tune it will idle @1500 then settle... is this typical for the 5.4 4v's?

IDK if it's typical or not, mine does, but mine has a the big ass monoblade which creates a world of oddities.

 

[ZXMustang]

You need to be running NGK BR7EF plugs. Not tr6's.

http://www.lethalperformance.com/99...-18_445/ngk-br7ef-spark-plugs-set-of-8-p-4260

I ran them in my GT500 and they worked perfect.

 

[stkjock]

with E85 it's been recommended to use TR6s due to the cooling effects of the ethanol

 

[Bigmike0405]

Love the whip Stkjock

 

[stkjock]

Love the whip Stkjock

Thank you. Yours aint to shabby either.

 

[Boozshey]

You need to be running NGK BR7EF plugs. Not tr6's.

http://www.lethalperformance.com/99...-18_445/ngk-br7ef-spark-plugs-set-of-8-p-4260

I ran them in my GT500 and they worked perfect.

Off Topic: Sorry to hi-jack, so these are recommended over the TR6's. I am pushing 15-17psi...

At what gap?