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PostPosted: Thu Feb 24, 2022 12:41 pm 
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3 Deuce Webber

Joined: Wed Mar 31, 2021 9:40 am
Posts: 88
Car Model: 1983 D150 Slantsix 4 speed
I currently have a 83 d150 slant six 1bbl and I'm having an issue with hard start when it's warm sunny out. When it starts to cool down or overnight it starts right up. Ill drive it around and stop it and still starts right up. But when i let it sit for about 4 hours in the sun it hard to start after several tries whats going on.


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PostPosted: Fri Feb 25, 2022 9:50 am 
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EFI Slant 6

Joined: Mon May 26, 2014 4:02 pm
Posts: 339
Location: Vermont
Car Model: Slant Six powered M37
Hard to start as in the engine turns over slowly and does not catch, Or lots and lots of cranking to get it to start?


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PostPosted: Fri Feb 25, 2022 9:50 am 
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Joined: Thu Oct 31, 2002 5:39 pm
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Fuel line mod

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PostPosted: Sat Feb 26, 2022 7:06 am 
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3 Deuce Webber

Joined: Wed Mar 31, 2021 9:40 am
Posts: 88
Car Model: 1983 D150 Slantsix 4 speed
Jase wrote:
Hard to start as in the engine turns over slowly and does not catch, Or lots and lots of cranking to get it to start?


Lots of cranking to get it started


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PostPosted: Sat Feb 26, 2022 7:10 am 
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3 Deuce Webber

Joined: Wed Mar 31, 2021 9:40 am
Posts: 88
Car Model: 1983 D150 Slantsix 4 speed
SlantSixDan wrote:


Thank you. I will replace and see what happens. Is this a comman issue with the d150s?


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PostPosted: Sat Feb 26, 2022 7:44 am 
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Supercharged
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Location: IRWIN PA
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It's Probably common with any Slant 6 in OE configuration with the stock Fuel Line and Modern Fuels.


Greg

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PostPosted: Sun Feb 27, 2022 4:16 pm 
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3 Deuce Webber

Joined: Wed Mar 31, 2021 9:40 am
Posts: 88
Car Model: 1983 D150 Slantsix 4 speed
Greg Ondayko wrote:
It's Probably common with any Slant 6 in OE configuration with the stock Fuel Line and Modern Fuels.


Greg

Question so with the fuel filter with the 3rd nipple where would I connect the return hose to? Is it somewhere in the sending unit?


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PostPosted: Mon Mar 07, 2022 7:58 pm 
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3 Deuce Webber

Joined: Wed Mar 31, 2021 9:40 am
Posts: 88
Car Model: 1983 D150 Slantsix 4 speed
Greg Ondayko wrote:
It's Probably common with any Slant 6 in OE configuration with the stock Fuel Line and Modern Fuels.


Greg

I haven't had a chance to fix it but there is also some other issues when the engine is hot and I'm driving it will randomly shut off.and I have to keep on cranking it for it to start. Will the fuel line mod fix this issue or could it be something else.


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PostPosted: Tue Mar 08, 2022 3:08 am 
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Does it still have the Lean Burn ignition system on it?

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PostPosted: Tue Mar 08, 2022 3:38 am 
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3 Deuce Webber

Joined: Wed Mar 31, 2021 9:40 am
Posts: 88
Car Model: 1983 D150 Slantsix 4 speed
Rick Covalt wrote:
Does it still have the Lean Burn ignition system on it?


I have no clue. Where is it located at? What does it look like?


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PostPosted: Tue Mar 08, 2022 6:24 am 
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EFI Slant 6
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SlantSixDan wrote:


I did that to mine and it didn't do diddly squat to make it any better! YMMV. Good Luck


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PostPosted: Tue Mar 08, 2022 10:01 am 
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3 Deuce Webber

Joined: Wed Mar 31, 2021 9:40 am
Posts: 88
Car Model: 1983 D150 Slantsix 4 speed
69a100 wrote:
SlantSixDan wrote:


I did that to mine and it didn't do diddly squat to make it any better! YMMV. Good Luck


How did you fix the problem?


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PostPosted: Wed Mar 09, 2022 6:25 am 
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EFI Slant 6
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Slantsix83 wrote:
69a100 wrote:
SlantSixDan wrote:


I did that to mine and it didn't do diddly squat to make it any better! YMMV. Good Luck


How did you fix the problem?


I've learned to live & deal with it, and NOT put myself into situations where it happens! If it does happen, I hold my foot to the floor and crank till it fires. It's a flood/vapor lock type condition that's happening, nothing you do can fix it because it's the gas that's the problem. Good Luck


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PostPosted: Wed Mar 09, 2022 10:14 am 
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3 Deuce Webber

Joined: Wed Mar 31, 2021 9:40 am
Posts: 88
Car Model: 1983 D150 Slantsix 4 speed
69a100 wrote:
Slantsix83 wrote:
69a100 wrote:

I did that to mine and it didn't do diddly squat to make it any better! YMMV. Good Luck


How did you fix the problem?


I've learned to live & deal with it, and NOT put myself into situations where it happens! If it does happen, I hold my foot to the floor and crank till it fires. It's a flood/vapor lock type condition that's happening, nothing you do can fix it because it's the gas that's the problem. Good Luck


So if it's modern gas isn't their some sort of aftermarket pump? As well as replacing all the hoses to more modern?


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PostPosted: Wed Mar 09, 2022 7:03 pm 
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Slantsix83 wrote:
So if it's modern gas


It's not; that's the kind of sour-grapes excuse sometimes used by those who won't admit the limits of their knowledge and ability.

Quote:
isn't their some sort of aftermarket pump? As well as replacing all the hoses to more modern?


It's good practice to go through and replace all your flexible fuel hose with fuel injection hose marked 30R9. The problem isn't being caused by your fuel pump not being the right type (or being incompatible with modern gasoline, etc).

Other things to check: make sure your manifold heat control valve isn't stuck in the heat-on position, and make sure your carburetor is in tip-top condition with a correctly-adjusted float (that hasn't absorbed gasoline and gone heavy) and the correct thick, insulating base gasket. Carburetor operation and repair manuals and links to training movies and carb repair/modification threads are posted here for free download, and tune-up parts and technique suggestions in this post. A further modification to reduce the tendency of engine heat after shutdown turning the carburetor into a boiling teakettle is to make a heat shield. There was a factory item, but it has been unavailable for many years, so this would be a make-it-yourself item. Diagram is in this thread.

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