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Nissan Pathfinder Fuel Problem

20 messages,  Last post on Nov 19, 2009 at 10:59 AM

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#1 of 20 problem with fuel by esoria Jan 08, 2007 (12:00 am)
I have an 1988 nissan pathfinder. It's ran we'll for quite sometime till last week when i was driving and it felt a little hesitation. I didn't think much og it till it started getting worse and worse till now i step on the gas and it stalls. It will shut off, i have to keep stepping on the gas to stay on. Does anyone know what it would be. I need to get it running asap. Replies to this message: pathstar1 (Jan 08, 2007 7:21 am)
#2 of 20 Re: problem with fuel [esoria] by pathstar1 Jan 08, 2007 (7:21 am)
Replying to: esoria (Jan 08, 2007 12:00 am) One possibility (of many) is you got some gas with water in it. If there is enough water you may have to drain the tank, but a good place to start is to put a litre or so of isopropyl alcohol in the tank. It absorbs the water and is itself absorbed in the gas, spreading the water throughout the fuel, allowing the engine to burn it without stalling.
#3 of 20 more info by esoria Jan 08, 2007 (1:13 pm)
I had replaced the fuel filter last week and it did help for about 3hrs. It ran like a champ then 3hrs later did it again. I'm in square one. RPM's jump around. if i don't have my foot on the gas it shuts off. If i'm driving i need to keep stepping on the pedal back and forth so it will go and i can't step on it to hard or it bogs out. I'm draining the tank as i'm typing!
#4 of 20 Help by esoria Jan 10, 2007 (12:18 pm)
i drained fuel tank and replaced fuel filter and it runs like a champ now but now at idle the rpm's jump around or completly shuts down. I did put injection cleaner with fuel. how can i keep it running at idling? Replies to this message: pathstar1 (Jan 10, 2007 12:57 pm)
#5 of 20 Re: Help [esoria] by pathstar1 Jan 10, 2007 (12:57 pm)
Replying to: esoria (Jan 10, 2007 12:18 pm) There is probably a separate idle fuel circuit. It sounds like there is still a little water in that circuit. Or it could be dirt - you probably found rust in the tank along with the water. That rust will clog the idle passages in the throttle body. The last time I got a bad tank of fuel I had to drain the tank and clean the rest of the system as well - including disassembly of the throttle parts to clean them out.   Did you find water in the fuel tank when you drained it?
#6 of 20 yes by esoria Jan 10, 2007 (3:23 pm)
Yes i did find water in the fuel tank. Replies to this message: pathstar1 (Jan 11, 2007 7:21 am)
#7 of 20 Re: yes [esoria] by pathstar1 Jan 11, 2007 (7:21 am)
Replying to: esoria (Jan 10, 2007 3:23 pm) OK, as I posted before, run some isopropyl alcohol through the system. You can save money by buying it as isopropyl alcohol or you can pay more by buying it as gasline antifreeze. One litre or so to a tank should be enough. Or fill up with the 10% ethanol fuel, which will do the same job. Either way will get rid of the last of the water. If it still runs roughly after that, there is probably "rust powder" stuck in some orifice in the fuel system. The effects of the alcohol will fix it in just a few minutes if it's just water.
#8 of 20 Help by esoria Jan 12, 2007 (11:29 am)
I ran some heet but still have same problem. RPM's are all over and now the engine light is on. I need to step on gas to stay on. It even back fires at times and muffler seems to be hotter than usual.
#9 of 20 a.b. valve by esoria Jan 12, 2007 (3:03 pm)
What's does an a.b. valve do. The hose was broke. I replaced would that had done anything?
#10 of 20 Back to square one!! by esoria Jan 15, 2007 (1:53 pm)
I'm back to square one. It shuts off and no acceleration. I step on the gas and it hesitates big time. Any suggestions?

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