Air leak in fuel system - Ford Powerstroke Diesel Forum
7.3L IDI (Non-Powerstroke) Diesels Technical discussion of topics related to vehicles powered by the 7.3 Liter In-Direct Injection Navistar engines.

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post #1 of 2 Old 10-06-2012, 05:14 PM Thread Starter Rookie
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Air leak in fuel system

I have a 1990 F250 with the international Navistar engine. There is a leak in the fuel system some where but dont know where. Was wondering if anyone knew if there are any common places to check. Any help would be greatly appriciated. Thanks Mark
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post #2 of 2 Old 10-18-2012, 10:03 AM Rookie
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Return lines like to go bad on those engines, what exactly is it doing?

'85 Frame
'95 Cab bed and front clip
'88 7.3 IDI
'92 ZF 5-speed
'99 Factory exaust
'89 Rear axle
Banks sidewinder turbo
6637 air filter
Isspro boost and pyrometer
Name a part...I've probably modified it
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