Block heater ? - Diesel Forum -
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 01-16-2013, 12:14 PM Thread Starter
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Block heater ?

I need some help.
Truck 1990 7.3 IDI, E40D, 2WD, 105k Original miles
Cold start= lots and lots of smoke
Last night I plugged in the block heater, this am started fast NO SMOKE at all
What do I need to fix??
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post #2 of 4 (permalink) Old 01-16-2013, 12:35 PM
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How long does your Wait To Start light stay on?

This time of the year cold starts produce lots of smoke.

You need to plug it in for at lest 2 hours every morning.


Paul - Pocono Mtns. USA
02 E350 15 Passenger Cream Puff, 72,000 Miles, 5.4L Gasser

'90 E350 7.3L Ex-Ambulance High Top 420K Miles, No Turbo, Stock Stock stock, No ELC! (Extended Life Coolant) & 10 Oz. Bars Stop Leak. 10 wonderful cool years using Freeze12 without any AC system modifications. Retired 11/8/2011 with blown trans.

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post #3 of 4 (permalink) Old 01-16-2013, 06:42 PM
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If you smell fuel at idle you probably need to change your return lines. Atleast that is what mine needed. Starts much better with alot less smoke.

92 F-250 7.3 IDI (banks turbo), E4OD, 3:55, 4x4
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post #4 of 4 (permalink) Old 01-17-2013, 12:51 PM
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Cold engines will smoke until the chambers come up to temp. If you plug it in the chambers start at a warmer temp so it will not smoke as much.

Alvin Mitchell
Pablo Montana
1983 F250 4X4 4.10 gears 4 speed dana 50 center/44 outers Dana 70 rear
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