P0171 and P0174 Bank 1 & 2 lean

[Broncoholic]

Guess I'm getting a smoke machine! My '03 5.4 has been running great, but set 4 codes yesterday - P1000, P0171, P0174, P0442. I expected the 442 since I've had cracked plastic fuel tank fittings for years, but the lean conditions are new and point to a new vacuum leak. I have mostly original vacuum lines in the engine bay.

 

[Kenerator]

You will not regret the smoke machine. I have used mine several times to diagnose issues. It paid for itself with the first repair.

 

[Broncoholic]

You will not regret the smoke machine. I have used mine several times to diagnose issues. It paid for itself with the first repair.

I hope you're right! I guess I'll respond after this weekend.

 

[Broncoholic]

Popped the hood and think I found the leak in 2 seconds without getting dirty or taking the smoke machine out of the box. Gonna see if this hose is still available OEM.

 

[kep5niner]

I replaced that - just used rubber heater hose. Works fine.

 

[Kenerator]

I replaced that - just used rubber heater hose. Works fine.

Same here. Works well.

 

[Broncoholic]

2' of 3/8" fuel line with a dab of oil on each end to help it slip over the barbs. Unfortunately the clips on the green elbow were brittle and broke off. It's a snug fit at the valve assembly so I don't think it'll fall off, but I may add a zip tie around the whole thing to ensure it doesn't slip off.

 

[Hamfisted]

I used the Dorman replacement and found the hose to be higher quality than the OEM hose. It's been on there for about 8 years and no sign of deterioration . I don't know why Ford used such crap material for their vacuum hoses, but they did.

Dorman Replacement Evap Vapor Vacuum Hose on Amazon




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[Broncoholic]

I used the Dorman replacement and found the hose to be higher quality than the OEM hose. It's been on there for about 8 years and no sign of deterioration . I don't know why Ford used such crap material for their vacuum hoses, but they did.

Dorman Replacement Evap Vapor Vacuum Hose on Amazon
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I looked at that, but all the fitments said it wasn't for 2003 Expy. I figured, if I'm buying something that isn't made to fit, I'll just go the cheap route and buy bulk fuel line.

 

[Hamfisted]

I looked at that, but all the fitments said it wasn't for 2003 Expy. I figured, if I'm buying something that isn't made to fit, I'll just go the cheap route and buy bulk fuel line.

Yeah, sometimes Amazon's fitment charts are off. But it fits and is a direct replacement.






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