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V8 Fuel Issue?


Feffman

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Hi All:

Buddy just called me and it seems at high speeds on his 1997 V8 when slowing down from around 130MPH and turning into a turn he gets a huge stumble. Also at idle after driving or running for a while he has a bad sputte, akin to a miss. Any thoughts?

Feff

Replace the spark plugs and try it!!

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Hi All:

Buddy just called me and it seems at high speeds on his 1997 V8 when slowing down from around 130MPH and turning into a turn he gets a huge stumble. Also at idle after driving or running for a while he has a bad sputte, akin to a miss. Any thoughts?

Feff

Hey Mark

It defiantly sounds like too much fuel flooding out the cylinder. From there I would look at fuel pressure regulation or an injector sticking open.

Good luck. Craig

2001 Esprit V8

1985 911 Carrera converted to 1974 RSR IROC race car

1967 Chevrolet Camaro SS350 convertible (goes fast and straight - limited handling!)

www.hollowayperformance.com

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I would echo primary or secondary injector problem.

Hey Mark

It defiantly sounds like too much fuel flooding out the cylinder. From there I would look at fuel pressure regulation or an injector sticking open.

Good luck. Craig

1996 Esprit V8, 1998 Esprit V8 GT, 1999 Esprit S350 #002 (Esprit GT1 replica project), 1996 Esprit V8 GT1 (chassis 114-001), 1992 Lotus Omega (927E), 1999 Esprit V8SE, 1999 Esprit S350 #032, 1995 Esprit S4s, 1999 Esprit V8 GT (ex-5th Gear project), 1999 Esprit V8SE ('02 rear)

1999 S350 #002 Esprit GT1 replica

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Gents:

Thanks! Plugs have been changed as a 1st line of defense previously, but issue remained. I just called to suggest new secondary injectors to Dannie. They are on order froM JAE.

Happy Lotusing and I hope to see everyone at LOG 27 (www.LotusLtd.org) in Aspen!

Feff

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Gents:

Thanks! Plugs have been changed as a 1st line of defense previously, but issue remained. I just called to suggest new secondary injectors to Dannie. They are on order froM JAE.

Happy Lotusing and I hope to see everyone at LOG 27 (www.LotusLtd.org) in Aspen!

Feff

Mark

A simple attempt to correct the issue would be to run a good fuel system cleaner through with a tank of premium petrol. If any gum/varnish is built up on the injector, it may be impeding its ability to fully close/seat. Worth the $5 to try.

See you at Autobahn and LOG!

Craig

2001 Esprit V8

1985 911 Carrera converted to 1974 RSR IROC race car

1967 Chevrolet Camaro SS350 convertible (goes fast and straight - limited handling!)

www.hollowayperformance.com

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Hi Mark,

If it does also occur when he does not enter a turn I would suspect

- pre cat O2-sensors

- or secondary injectors are leaking into the plenum (check the O-rings around the secondaries)

Cheers

Marcus

Hi All:

Buddy just called me and it seems at high speeds on his 1997 V8 when slowing down from around 130MPH and turning into a turn he gets a huge stumble. Also at idle after driving or running for a while he has a bad sputte, akin to a miss. Any thoughts?

Feff

Edited by Paula&Marcus

Marcus

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