1985 F150 302 EFI Starting Problems

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1985 F150 302 EFI Starting Problems

JohnKorutz
My 1985 F150 302 EFI has trouble starting after the motor is warmed up. It has no problem starting in the cold what so ever. Only takes like 2 crank in the dead of winter, but I will have problems starting it after its warmed up. I dont think it has anything to do with the fuel filter or pump but I cant rule that out yet. I would truly appreciate the help.  Thank you I advance!
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Re: 1985 F150 302 EFI Starting Problems

Gary Lewis
Administrator
John - Welcome to the forum!  Glad you found us.  

I'm not, yet, checked out on EFI, but others are and will surely comment soon.  And I'll check back in the morning.
Gary, AKA "Gary fellow": Profile

Dad's: '81 F150 Ranger XLT 4x4: Down for restomod: Full-roller "stroked 351M" w/Trick Flow heads & intake, EEC-V SEFI/E4OD/3.50 gears w/Kevlar clutches
Blue: 2015 F150 Platinum 4x4 SuperCrew wearing Blue Jeans & sporting a 3.5L EB & Max Tow
Big Blue: 1985 F250HD 4x4: 460/ZF5/3.55's, D60 w/Ox locker & 10.25 Sterling/Trutrac, Blue Top & Borgeson, & EEC-V MAF/SEFI

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Re: 1985 F150 302 EFI Starting Problems

ScubaSteve
In reply to this post by JohnKorutz
Does the engine turn over at a normal cranking speed when warm?
1986 F150, XLT Lariat, 5.8, AOD, 8.8 limited slip, 4.10 gears
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Re: 1985 F150 302 EFI Starting Problems

Gary Lewis
Administrator
Morning.  I don't have answers but do have questions in addition to Steve's.

You said "I will have problems starting it after its warmed up", but can you describe what happens when trying to start it?

And how does it run after it starts?

Have you checked for codes?
Gary, AKA "Gary fellow": Profile

Dad's: '81 F150 Ranger XLT 4x4: Down for restomod: Full-roller "stroked 351M" w/Trick Flow heads & intake, EEC-V SEFI/E4OD/3.50 gears w/Kevlar clutches
Blue: 2015 F150 Platinum 4x4 SuperCrew wearing Blue Jeans & sporting a 3.5L EB & Max Tow
Big Blue: 1985 F250HD 4x4: 460/ZF5/3.55's, D60 w/Ox locker & 10.25 Sterling/Trutrac, Blue Top & Borgeson, & EEC-V MAF/SEFI

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Re: 1985 F150 302 EFI Starting Problems

Steve83
Banned User
In reply to this post by JohnKorutz
JohnKorutz wrote
My 1985 F150 302 EFI...
For us to really help, we need to know EVERYTHING about the truck: miles, maintenance, modifications, damage, repairs, options...  The more we know, the more likely we can offer relevant suggestions.  Click this, read the caption, study the truck, and put ALL the details into your signature here so they appear automatically with each post:

JohnKorutz wrote
...will have problems starting it after its warmed up.
But you didn't tell us WHAT those problems are.  We can't see or hear it, so you have to describe it thoroughly.  Read this:

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Re: 1985 F150 302 EFI Starting Problems

vjsimone
In reply to this post by JohnKorutz
In addition;
When your truck cold starts, define the 1st 30 seconds rpm level? The 2nd 30 seconds rpm level? The 3rd 30 seconds rpm level? and the 4th 30 seconds rpm level?

Basically, how is it acting for the first 2-3 minutes in those increments from cold-start.
Vinny... "Do All Scheduled Maintenance Prior To Troubleshooting" "Resolve All Known Issues Prior To Troubleshooting"