Birty Dastards Jeep Club

Tech Forum => Workshop => Topic started by: Green Jeep on June 04, 2011, 11:44:50 AM

Title: WJ 4.7 V8 starting issues.... 2001
Post by: Green Jeep on June 04, 2011, 11:44:50 AM

Hi,

Got a WJ V8 turns over for a long time before starting, then it will be fine another time starting within a couple of seconds... idles, revs and drive perfectly

Any ideas? Thanks in advance Maf

Title: Re: WJ 4.7 V8 starting issues.... 2001
Post by: Mike Pavelin on June 04, 2011, 11:59:04 AM

It's the residual fuel rail pressure leaking back through the fuel pump. If you switch on, pause, switch off, then crank, it'll fire up straight away. Cure? Fuel tank out, either fit a repair kit to the pump or replace it.

Title: Re: WJ 4.7 V8 starting issues.... 2001
Post by: Green Jeep on June 07, 2011, 10:54:02 AM

Quote from: Mike Pavelin on June 04, 2011, 11:59:04 AM

It's the residual fuel rail pressure leaking back through the fuel pump. If you switch on, pause, switch off, then crank, it'll fire up straight away. Cure? Fuel tank out, either fit a repair kit to the pump or replace it.

Hi,

Thanks, yes  it appears that is the problem, cheers Maf

Title: Re: WJ 4.7 V8 starting issues.... 2001
Post by: Bulldog67 on June 07, 2011, 11:22:27 AM

Mike has a big brain