Slow start with SCT

[06DZL]

Ive had my sct on my truck for maybe 3 months now and just had my first issue last week.

I noticed the truck taking longer to start...it used to start up after one or 2 revolutions now its more like 7-8. From reading I figured it may be the FICM but i havnt checked it myself yet. I planned on taking the truck to the dealer since it has about 2 more months on the warrenty so i uploaded the stock tune Friday morning. Well with the stock tune loaded the truck starts up normal..1-2 revolutions. So last night i decided to upload the street tune again just to see if it was still acting up...and it was.

Does this sound like the FICM or something going on with the tune?

Like i said i havnt had any issues up until last week. The truck is tuned and straight piped thats it.

Thanks

[PGreenSVT]

Due for an oil change? Running synthetic 5w40? Check the FICM. It's easy to do.

[tnet69]

I am having the same issue. It takes a long time for the truck to start even when it it 85 degrees outside. I asked this question last night but have yet to see any replies.

[06DZL]

Originally Posted by PGreenSVT

Due for an oil change? Running synthetic 5w40? Check the FICM. It's easy to do.

My last oil change was about 2000 miles ago. Running sae 15 40 rotella and change it every 6k miles, fuel filter every 12k miles. I was thinking may it was the lift pump also so i stroked the key 3-4 times to make sure pressure was still built up and it still had the same issue.

Ill check the FICM first chance i get.

[06DZL]

Originally Posted by tnet69

I am having the same issue. It takes a long time for the truck to start even when it it 85 degrees outside. I asked this question last night but have yet to see any replies.

Yea i saw your post after i made mine. Have you tried to upload your stock tune and drive it a few days to see if the problem goes away?

Whos tunes are you running? Whats your strategy? Just wondering if ours are both the same...PM me if you would like.

[tnet69]

No I have not, I do know that I did not start having problems until I used the progammer. I sent Matt at Gearhead an email asking if he had any ideas. I hope he has a trick up his sleave or it looks like I might be spending $600 on a Swamps FICM.

[06DZL]

Finally got around to checking the FICM today...it stayed at 48.8 through KOEO test and cranking test.

Guess ill check fuel pressure next?

[06DZL]

Can someone point me in the direction of the fuel pressure check thread...i know ive seen one but cant find it! Thanks

[TerraScaper]

I'm running the same tune and experiencing the same thing, maybe not quite 7-8 revs but def longer than stock. Do a search you'll find the thread....I just bought all the parts for the fuel pressure guage, glowshift has a nice digital gauage with blue numbers for around $70, get the adapter from them too, its only 7 bucks. Use spring11 for coupon code for an additional 10% off

[06DZL]

Checked fuel pressure today KOEO had 68lbs and at idle it didnt move. I purchased a regulator upgrade kit last week with intentions to install but after checking today it looks like it may already have one in it. I did also pick up the 6.4 banjos but havnt installed them yet.

Also load tested the batteries, both held 11.5. ICP was checked with scan tool and is above 500psi, although it doesnt show pressure until the truck has cranked-this could still be an issue.

I did notice today theres a little more oil on my dipstick possibly getting fuel in the oil, im thinking maybe theres a bad o-ring on an injector or maybe a dummy plug has gone bad causing the icp longer to build up pressure? Does this make sense? Is there an easy way to check or will i have to go ahead and pull the valve covers?

Again the truck runs great once started, no excess smoke, just hard to start.

Thanks for your input.