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Old diesel mechanic told me to check fuel return line before replacing injectors on a 7.3 Powerstroke
I spent 3 hours pulling injectors on a customer's 2002 F-350 before he walked over and pointed at a kinked return line that was causing all the misfires, has anyone else had a simple hose ruin their whole diagnosis?
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xenaf513mo ago
Pulled my hair out for two days on a 6.0 once, chasing a low fuel pressure code. Turned out the check valve in the fuel filter housing was stuck open, letting fuel drain back to the tank overnight. I started carrying a cheap fuel pressure gauge in my box after that. Always check the easy stuff first, even if it feels like a waste of time... saved me a lot of scraped knuckles.
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