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#4501172 - 08/29/17 10:24 AM 1999 S-10 4.3L V6 Nagging Hot Start Problem
MolaKule Offline


Registered: 06/05/02
Posts: 19042
Loc: Iowegia - USA
Well, we finally found the problem with the Hot Start.

Lately, I had been getting a couple of "Fouled Plug" codes.

I mixed up a strong solvent brew consisting of fuel grade PEA, Toluene, chloro-alkybenzene's, chlorohexane's, Naphtha, Kerosene, and Isopropyl alcohol. This improved things slightly, but after a 1/8 tank of this mixed with 93 octane gasoline, still no go.

In addition, the idle was getting more erratic and idle RPM would drop after warm up. A hot Restart required the throttle to be opened a bit or no go.

I took the S-10 back to my trusted mechanic and asked him to keep it until he found the problem this time.

Apparently, this fuel delivery system has the CMFI system.

After two days they verified it was the fuel pressure regulator leaking down and actually saw the fuel pressure drop after warm up. The poppet valves are working as designed.

So "Sammy" the S-10 (as my grandsons call it) now runs like it's on steroids. happy

Many thanks to Trav for his suggestions. thumbsup


Edited by MolaKule (08/29/17 10:36 AM)

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#4501414 - 08/29/17 03:10 PM Re: 1999 S-10 4.3L V6 Nagging Hot Start Problem [Re: MolaKule]
hemitruck Offline


Registered: 03/18/11
Posts: 374
Loc: new jersey
Always liked those trucks. How many miles.

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#4501418 - 08/29/17 03:17 PM Re: 1999 S-10 4.3L V6 Nagging Hot Start Problem [Re: MolaKule]
dlundblad Offline


Registered: 09/30/13
Posts: 10058
Loc: Indiana
Is this connected to the spider?

Were you able to buy just the regulator or did you need to buy a complete assembly?
_________________________
03 Jeep WJ 4.0 199k Castrol Edge 10w40 HM Fram XG16
02 Volvo S60 2.4T 177k M1 0w40 Mahle OX149D
97 Chevy Blazer 4.3 145k Rotella T5 10w30 Fram TG3980


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#4501882 - 08/29/17 11:32 PM Re: 1999 S-10 4.3L V6 Nagging Hot Start Problem [Re: hemitruck]
MolaKule Offline


Registered: 06/05/02
Posts: 19042
Loc: Iowegia - USA
Originally Posted By: hemitruck
Always liked those trucks. How many miles.?



206,000 miles.


Edited by MolaKule (08/29/17 11:33 PM)

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#4501883 - 08/29/17 11:33 PM Re: 1999 S-10 4.3L V6 Nagging Hot Start Problem [Re: dlundblad]
MolaKule Offline


Registered: 06/05/02
Posts: 19042
Loc: Iowegia - USA
Originally Posted By: dlundblad
Is this connected to the spider?

Were you able to buy just the regulator or did you need to buy a complete assembly?


Thankfully, just the regulator.

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#4501943 - 08/30/17 02:59 AM Re: 1999 S-10 4.3L V6 Nagging Hot Start Problem [Re: MolaKule]
ltslimjim Offline


Registered: 08/06/10
Posts: 5642
Loc: WatUpDoc
Nice. My dad's 2001 S-10 4.3L is having some strange electrical problems; wipers randomly not working and vehicle refusing to allow windows to roll up. lol
_________________________
92 Civic Hatch (stolen frown RIP)
07 Honda Fit Sport (A/T) WELCOME thumbsup

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#4502183 - 08/30/17 10:27 AM Re: 1999 S-10 4.3L V6 Nagging Hot Start Problem [Re: MolaKule]
MolaKule Offline


Registered: 06/05/02
Posts: 19042
Loc: Iowegia - USA
This one has the manual window crank, which I prefer and less costly to repair.

This is also my Storm Spotting vehicle, so when I need it to start and go, I need it to start and go, NOW! shocked2

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