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Old 09-15-2012, 09:25 AM   #1
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Join Date: Sep 2012
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8.1L gm Workhorse hard starting

I have a 2003 Winnebago Brave equipped with a 8.1L gm Workhorse fuel injected engine. Hot or cold I have to crank the engine for 8-10 seconds 2 to 3 times before it will start. Once started, there are no issues. I have replaced the fuel pressure regulator with no help. My local mechanic want to replace the fuel pump to the tune of $1400. This includes removing the rear hydraulic jacks and dropping the fuel tank. Does anyone know of any other options?

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Old 09-15-2012, 09:41 AM   #2
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Workhorse Chassis Owner
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Location: Glendora Ca.
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I would install a one way check valve near fuel tank.


2004 Monaco Monarch
Blueox, SMI, 1990 Wrangler YJ
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Old 09-15-2012, 09:59 AM   #3
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have you updated the fuel filter? Verified fuel pressure? Checked all the injector/MAF connections?
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Old 09-15-2012, 10:52 AM   #4
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Location: Powell River, B.C.
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Sorry that your having problems. There have been a few posts that detailed opening up the floor under the bed to access the pump. A last resort! As other posters have asked, did you verify fuel pressure loss with an hour long,engine off , test? When the key is first turned on , before you crank the engine, does the pressure build at all ?
99DSDP 3884, Freightliner, XC, CAT 3126B, 300 HP /ALLISON 3060
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Old 09-15-2012, 07:32 PM   #5
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Workhorse Chassis Owner
Join Date: Aug 2010
Location: Portland, Oregon
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I would also post this question on the Workhorse forum of the web site.. I bet driVer or Oemy will have some ideas.. Good Luck
2004 National See Breeze LX8375, Towing a 2012 Liberty
retired. Now What?
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