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 Gas in Fuel Return Line
#766177
11/19/06 03:22 AM
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Anonymous
Unregistered
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My 1998 Isuzu Wizard diesel (4JX1 engine) has recently experienced severe loss of power when under load. The same symptoms were experienced 18 months ago, and were fixed by replacing the injector O rings.
This time the mechanics have found that when the engine revs, gas bubbles appear in the fuel return line. They are reluctant to take the injectors out until they are sure that O ring failure could cause the gas in the fuel return. Is there anyone out there who knows if this is possible?
Thanks in advance.
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Re: Gas in Fuel Return Line
#766178
11/20/06 01:42 PM
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Joined: Mar 2004
Posts: 156
Wheeler
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Is it possible youhave an air leak in the supply line or fuel filter?
Your symptoms are rather pronounced so I would suggest looking for a direct, simple (less expensive??) solution.
Eric
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Re: Gas in Fuel Return Line
[Re: kravdraa]
#766179
11/20/06 07:33 PM
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Anonymous
Unregistered
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They've checked out the fuel line to the pump and its OK.
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Re: Gas in Fuel Return Line
#766180
11/21/06 01:53 PM
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Joined: Dec 2004
Posts: 45
Getting the Wheeling Fever
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Hello BRG. As the injectors are on the pressure side of the IP, I can not see how air could be sucked into the fuel lines.......I would put a electric push pump on the supply side............
crossbones
1982 Luv Diesel 4X2
1982 Luv Diesel 4X4
1981 Luv diesel 4X2
1983 Isuzu Diesel 4X4
1986 Trooper TD
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Re: Gas in Fuel Return Line
[Re: crossbones]
#766181
11/22/06 01:09 AM
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Joined: May 2006
Posts: 212
Wheeler
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Crossbones, do you reccomend the Facet in-line fuel pump at 3-5 psi?
Brian
Brian Rodgers Internet traffic relayed through DIY solar powered WiFi tower. www.outfitnm.com1989 Isuzu Pup gasser 2-86 Isuzu Trooper turbo diesels (1 good 1 bad) Many gallons of biodiesel since 2005
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Re: Gas in Fuel Return Line
[Re: OutfitBoss]
#766182
11/22/06 07:20 PM
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Joined: Dec 2004
Posts: 45
Getting the Wheeling Fever
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Hello. If given the choice of availability and if there are any plans to use alternative fuels, 12-15 psi....you can always install a pressure regulator if you find it is to much.........
crossbones
1982 Luv Diesel 4X2
1982 Luv Diesel 4X4
1981 Luv diesel 4X2
1983 Isuzu Diesel 4X4
1986 Trooper TD
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Re: Gas in Fuel Return Line
[Re: crossbones]
#766183
11/23/06 03:02 PM
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Joined: May 2006
Posts: 212
Wheeler
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Thanks man, I'm running 100% biodiesel in both Troopers. It is getting cold here in northern New Mexico at night. I worry the IP is going to suffer in the morning. I was thinking besides the booster fuel pump, I'd heat the fuel a little bit too. I haven't worked out how I'll do this yet. Brian <img src="/forums/images/graemlins/baby.gif" alt="" />
Brian Rodgers Internet traffic relayed through DIY solar powered WiFi tower. www.outfitnm.com1989 Isuzu Pup gasser 2-86 Isuzu Trooper turbo diesels (1 good 1 bad) Many gallons of biodiesel since 2005
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Re: Gas in Fuel Return Line
[Re: OutfitBoss]
#766184
11/23/06 07:49 PM
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Anonymous
Unregistered
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Problem solved. O rings and injector sleeves have been replaced and the engine is now running sweet. Thanks for your input.
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