Listen to this cold start see what you think - Ford Powerstroke Diesel Forum
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post #1 of 14 Old 01-13-2011, 11:34 AM Thread Starter
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Listen to this cold start see what you think

Just got the truck, last night, 25 degrees, truck would not start. Plugged it in all night and this is the start with outside temp 29 degrees. Tell me how this sounds to you. Also, if you know what the device on the passenger side that is buzzing let me know what it is.


This is 2 mins after start, I guess this is the EBPV starting to close?


A few minutes later, the sound was coming and going like every few seconds and then got solid again, EBPV?


This rattle type noise was some 5 or 6 miles down the road, could this be EBPV chattering?


This sound happens at no load or decel, I was concerned it might be rod knocking but it could also be from the broken EBPV sensor tube leaking exhaust?


Last edited by angcobra; 01-13-2011 at 01:39 PM. Reason: added more vids
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post #2 of 14 Old 01-13-2011, 11:44 AM
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Buzzing was your vacuum pump.

What kinda oil is in the truck?

What was the key on voltage at the cold side of the GPR

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post #3 of 14 Old 01-13-2011, 11:59 AM Thread Starter
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Quote:
Originally Posted by Dave View Post
Buzzing was your vacuum pump.

What kinda oil is in the truck?

What was the key on voltage at the cold side of the GPR
15W-40 Rotella is what the seller said.

Key off was 12.8 volts to relay,
Key on was 11.8 volts to GP side of relay.
NOTE: I tested the relay several times, it is not working everytime, time to change it.
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post #4 of 14 Old 01-13-2011, 01:33 PM
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Mine sounds like that if I don't plug it in in 20* temps. Haven't plugged it in yet this season.



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post #5 of 14 Old 01-13-2011, 04:48 PM
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check your block heater cable
my truck sounds like that if i start without being plugged(the rump)

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post #6 of 14 Old 01-13-2011, 04:53 PM
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also change oil and filter,fuel filter
you can unplug the ebpv to see if noise goes away

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post #7 of 14 Old 01-14-2011, 01:35 AM
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Hissing definatley is the back pressure valve. Everything sounded normal there. Mine tends to go on and off when its really cold. Not sure if thats perfect behavior, but its not hurting anything.

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post #8 of 14 Old 01-14-2011, 02:04 AM
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i like how the vids are for diagnosing purposes

ya first is vac pump. btw theres a glow plug issue but you already know that. the allowable votage is 9-12v tho. i heard how it started up anyway.

second is ebpv closing

third is ebpv as well but should be close or open. not going back and forth.

fourth vid idk. but see if you can pin point it.

and the fifth vid. that aint good but it aint the tube. ive had a broken tube and it doesnt make any noise. just soot under the ac pump.

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post #9 of 14 Old 01-14-2011, 07:39 AM
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That 5th one bugs me.... It's not exactly like being there though (the vid) so hard to get the whole "feel" of it but I'll take a shot

An easy thing to do, I'd want take a peek at the converter bolts to be sure they're not loose. I dunno,,,, just a wild-assed guess (maybe it's just because you aimed the camera at the "hump" like that was the source of the noise) but it'd make me feel better to know
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post #10 of 14 Old 01-14-2011, 08:09 AM
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Just my 2 cents ... how much better of a cold start do you expect? That sounds just fine. Cold oil is one area of concern. Cold fuel another. Cold injectors another. Cold combustion chamber walls another.

There is every reason during a cold start (and warm-up) for a chamber to either not get fueled, get overfueled, to not combust, or to have a late injection. Also, when you are driving down the highway in 20-something degree air, you are force feeding that cold air into and on the engine that you are trying to warm up. There are so many reasons in cold weather for your truck not to start, to start sluggishly, to start rough, and to run noisily, and to run rough ... I'd be happy with what you've got. You don't need to diagnose why a cold engine sounds cold.

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