Pre-Power Stroke Diesel (7.3L IDI & 6.9L) Diesel Topics Only

90 7.3 block heater ?

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Old 12-15-2010, 06:22 AM
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90 7.3 block heater ?

is there a way i can check to see if my block heater is working? I had my truck plugged in for 12 hours and it still had a hard time starting. is this normal? its usually not this cold in NC and i dont usually have any problems. So i was just wondering if there is a way to make sure my block heater is working. oh and i have a new set of glow plugs in the truck so it should not be that
 
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Old 12-15-2010, 07:52 AM
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the easiest way to tell for me is to plug it in and when its quite put your ear down by the top of the passanger side wheel and listen you should be able to hear some stuff going on like a faint electrical noise the other way is to wait about an hour and go out and stuff ur hand back there the exhaust manifold and block on that side should be warm to the touch
 
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Old 12-15-2010, 07:55 AM
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if your truck is starting hard with brand new GPs and the BH plugged in, you may have an air intrusion problem. Does your truck start right up after a bit of cranking, or does it just fire on a few cylinders and start up rough like. Do you see any smoke before it starts while cranking?
 
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Old 12-15-2010, 07:59 AM
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yea I can hear my block heater working about 10-12 seconds after I plug it in. Theirs also a way to test the block heater with a tester but I dont recall what the readings are supposed to be.
 
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Old 12-15-2010, 11:26 AM
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Originally Posted by johnboggs21
if your truck is starting hard with brand new GPs and the BH plugged in, you may have an air intrusion problem. Does your truck start right up after a bit of cranking, or does it just fire on a few cylinders and start up rough like. Do you see any smoke before it starts while cranking?
it will run ruff for maybe 3 or 4 seconds. when it cranks up. I will spin the key for probably 10 seconds and will have to wait then do it again and again. probably 3 or 4 times. when its warm it starts right up but still runs ruff for a few seconds
 
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Old 12-15-2010, 11:29 AM
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Yeah, just feel around where you put oil in the engine and it should be warm. My rad also warms up too when the block heater is on.
 
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Old 12-16-2010, 05:14 AM
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it must not be working bc i went out this morning and the motor is cold. |Where is the heater located and where can i get another one
 
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Old 12-16-2010, 10:31 AM
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the BH is in the block pretty much right on top of the starter. just follow the cord. youll have to drain your coolent to replace it though
 
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Old 08-16-2011, 07:26 PM
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Thumbs up Tool for testing block heaters

JoSa Enterprises from Atkins, Iowa makes a really rugged tool that will test any block heater, it gives you a digital read out in volts, watts, and amps, normal block heater for a ford diesel will range from 700-1000 watts. Google - JoSa Enterprises Power-Block

Hope this helps!

www.josapowerblock.com
 
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