1988 7.3 injector issues I think - Diesel Forum - TheDieselStop.com
7.3L IDI Diesels (Not Power Strokes) 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 4 (permalink) Old 09-12-2019, 06:42 PM Thread Starter
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1988 7.3 injector issues I think

I just got this 88 f350 with a 7.3 the ignition has been hacked up pretty badly but it will start with starting fluid my question is should my injectors cycle when I turn my key on
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post #2 of 4 (permalink) Old 09-12-2019, 08:15 PM
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Two things occur with the key on in your truck-the glow plugs heat if connected and the fuel shut off opens. The injectors are operated with fuel pressure from the injector pump only.
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post #3 of 4 (permalink) Old 09-13-2019, 04:23 AM Thread Starter
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Any idea why I have to use starting fluid every time even after it sets for only 15 or 20 minutes when it does start it runs great
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post #4 of 4 (permalink) Old 09-13-2019, 01:20 PM
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Check the glow plugs. With an ohmmeter, check from the plug tip to ground after it had been sitting overnight. The reading should be somewhere around .2 ohms. Less than that it is probably shorted, more than that it is either going open, or already open.

1993 F-350 crew cab non-turbo 5 speed transmission
35 years a mechanic on large stationary engines natural gas and diesel fired, and other industrial equipment.
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