7.3l powerstroke engine tick please help - PowerStrokeNation : Ford Powerstroke Diesel Forum
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post #1 of 17 (permalink) Old 12-08-2014, 05:50 PM Thread Starter
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Exclamation 7.3l powerstroke engine tick please help

So last month I was in Cheyenne WY and noticed my engine making an off beat ticking noise between 1350-1600 rpm. I drop back to Laramie wy and the next morning the noise was gone. headed back to Denver co where it hasn't made a sound until mid last week. The sounds seemed to always disappear at 1750 and above rpms until this morning where it was still randomly ticking around 2200 cruising 75mph. this noise sounds like an exhaust leak but it comes and goes. before I got the diesel shop this morning the noise disappeared again. seems to happen hot or cold. truck doesn't smoke when it makes this noise, it just doesn't sound good. any ideas? engine parts are all original its a 2000 7.3 with 184k miles. changed fuel filter and fuel pump because it was making noise. tested with fuel pressure gauge at 64psi
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post #2 of 17 (permalink) Old 12-09-2014, 04:39 PM Thread Starter
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Re: 7.3l powerstroke engine tick please help

Just an update, I have a riff raff frx coming, I'm skeptical if it will fix the problem but I heard it helps the over all engine performance so I figured why not.
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post #3 of 17 (permalink) Old 12-09-2014, 11:50 PM
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Re: 7.3l powerstroke engine tick please help

I was looking at that frx on their website yesterday. Let us know if it's worth doing. Could the tick be a boost leak?

2000 Excursion 4x4 7.3
2000 F350 4x4 CC SWB
1988 Suzuki Samurai 4x4 (can I squeeze a 7.3 under the hood?)
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post #4 of 17 (permalink) Old 12-10-2014, 05:20 AM
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Re: 7.3l powerstroke engine tick please help

Unlikely. They don't seem to do much, and not really worth the money.
Check your up pipes for leaks.

1979 chevy c30 dually, sm465, 373's? Converted to 6.2 diesel, pump turned up and advanced a hair.(wrecked)
1994 ford F350 dually 4X4: 7.3 powerstroke, 5 speed. 6637, straight pipe into dual stacks. Cooper discoverer at/3's.
2010 Jetta TDI 40 or so mpg :flippa:
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post #5 of 17 (permalink) Old 12-10-2014, 04:57 PM Thread Starter
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Re: 7.3l powerstroke engine tick please help

Someone told me they were kind of a must at 500+ horse which I plan to be making by the end of the next summer. I did check the up pipes for leaks. the noise that I hear happens exactly just like in this video. idles perfect just like his. I also have the ebpv hooked to switch so i figured with that closed i should easily hear an exhaust leak if there was one. idk if this is a cracked flexplate? i just thought those make noise at idle as well. sounds to me like a miss but there are no codes or anything up on the truck[URL="https://www.youtube.com/watch?v=8uKVtGXw12M"]
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post #6 of 17 (permalink) Old 12-10-2014, 07:15 PM
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Re: 7.3l powerstroke engine tick please help

Ah, okay.
I'm not sure the exact noise a cracked flexplate makes.
But to me that sounds like a injector.

1979 chevy c30 dually, sm465, 373's? Converted to 6.2 diesel, pump turned up and advanced a hair.(wrecked)
1994 ford F350 dually 4X4: 7.3 powerstroke, 5 speed. 6637, straight pipe into dual stacks. Cooper discoverer at/3's.
2010 Jetta TDI 40 or so mpg :flippa:
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post #7 of 17 (permalink) Old 12-10-2014, 09:32 PM Thread Starter
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Re: 7.3l powerstroke engine tick please help

I was thinking the same thing the shop I brought it to thought otherwise. they said that normally it will have a miss at idle if that was the case. problem is I want to get 250cc injectors for the truck, plan is to build 500+ horse but I don't have the time or space to do all the supporting mods at the moment. can those injectors be tuned down with tuning? I guess I will bring it back and have kill injectors till the noise doesn't change at that speed
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post #8 of 17 (permalink) Old 12-10-2014, 10:04 PM
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Re: 7.3l powerstroke engine tick please help

Yeah, they can all be tuned down.
Do you have a way to watch ICP and duty cycle while driving? That would probably tell you a lot.

1979 chevy c30 dually, sm465, 373's? Converted to 6.2 diesel, pump turned up and advanced a hair.(wrecked)
1994 ford F350 dually 4X4: 7.3 powerstroke, 5 speed. 6637, straight pipe into dual stacks. Cooper discoverer at/3's.
2010 Jetta TDI 40 or so mpg :flippa:
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post #9 of 17 (permalink) Old 12-10-2014, 10:22 PM Thread Starter
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Re: 7.3l powerstroke engine tick please help

yes I do, ICP was about 2600 at nearly WOT at 75mph with chip on 75HP tune. i will have to install parameters to watch the duty cycle tonight. im using a scan gauge to watch it
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post #10 of 17 (permalink) Old 12-10-2014, 11:51 PM Thread Starter
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Re: 7.3l powerstroke engine tick please help

ok looked at icp and ipr on the way home running down the interstate. ipr duty cycle right before shift into od at 70-75 was at 34% and icp was flat lined at 2750. chip was set on stock. according to swamps diesel this indicates a pretty good hpop. I do have a lot of oil running down the back of my engine onto down pipe but I think if it were leaking out of the HPO system it would have been a lot lower pressure. I also just removed the flextplate inspection cover and flexplate appears good. I also checked to see if starter was maybe half disengaged and possibly hitting the ring gear but it doesn't appear to be there was a pretty good gap. the truck was also making the noise at around 40mph lugged down in od at 1300 ish rpm 2000 icp and 24% duty cycle. going to buzz test and cyl contribution test tomorrow. if anybody has any ideas on what else to look for please feel free to chime in :)
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