Sinister Coolant Filter-causes degas to puke? - Ford Powerstroke Diesel Forum
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Old 07-19-2013, 04:18 AM
bts bts is offline
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Sinister Coolant Filter-causes degas to puke?

Hi all, I'm at a loss for what is causing this? First, no issues with coolant puking prior to installing the coolant filter. Installed coolant filter as per instructions from Sinister. Truck began puking coolant out of the degas tank. I bought a new cap and installed a pressure gauge, running around the 16 PSI. I valve out the coolant filter and everything is fine, no puking. Tried different tunes and not change so I run the 300 Hot. Right now I just leave the coolant filter valved out which seems like a big waste of money.

Anybody have any ideas? Could I have the return line from the coolant filter "T" into somewhere else?
Thanks,
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Old 07-19-2013, 05:24 AM
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Are you sure you have the lines correct going to the filter? I'm not sure what would happen if the flow was reversed, but it's something to check.
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Old 07-19-2013, 05:27 AM
bts bts is offline
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Good point, ya I checked and double checked.

Thanks


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Old 07-19-2013, 07:45 AM
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The coolant filter system is just a bypass system so even if the filter were totally plugged or even installed backwards I think the rest of the system would still flow normally. I'm pretty sure the only way that it would be affected by the kit would be if you tied into the wrong line. Does it only do it when you get on the throttle hard? Was the system low on coolant after the install and maybe just pushing out some air?

Last edited by superduty6.4; 07-19-2013 at 08:11 AM.
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Old 07-19-2013, 08:05 AM
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Can you get us some pics of your installed setup?
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Old 07-19-2013, 10:35 AM
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Quote:
Originally Posted by superduty6.4 View Post
The coolant filter system is just a bypass system so even if the filter were totally plugged or even installed backwards I think the rest of the system would still flow normally. I'm pretty sure the only way that it would be affected by the kit would be if you tied into the wrong line. Does it only do it when you get on the throttle hard? Was the system low on coolant after the install and maybe just pushing out some air?
^^ This. I cant see how a bypass coolant filter setup would cause your truck to puke even if it was plugged or installed wrong.
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Old 07-19-2013, 10:49 AM
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you mention 16 psi with filter but what is the PSI without the filter ?

I can't see how the filter would have any impact on PSI ever
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Old 07-19-2013, 01:43 PM
bts bts is offline
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Lots of good input, thanks. It's plumbed according to sinister instructions, lower heater hose and return to coolant return hose on top of the rad. I've had it installed for a 6 months and valves out for the last 2-3 so no air pockets. Doesn't matter if I'm running it hard or not- pukes with the filter valves on, doesn't when isolated. Go figure?? Can't really see anything picture wise.

Keep the ideas coming, I'm sure we can figure this out

Thanks gentlemen!!


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Old 07-19-2013, 01:45 PM
bts bts is offline
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Sorry, 16 psi is what the cap is designed for, I just mentioned that to show it's not over pressurizing - not head studs.


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Old 11-30-2013, 06:06 PM
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Quote:
Originally Posted by bts View Post
Sorry, 16 psi is what the cap is designed for, I just mentioned that to show it's not over pressurizing - not head studs.


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This is very interesting. I installed a sinister coolant filter last spring and have experienced several puking events since. None before. Mine pukes under a hard pull so I was thinking HGs but I asked over on FTE if anyone thought the filter could be causing a problem. So yours quit puking with filter blocked? I'm pulling my trailer home Monday so I'm gonna block it and see what happens.
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