Compression Ignition Addict
Join Date: Oct 2011
Location: Tehachapi, CA
Thanked 85 Times in 83 Posts
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Always use a new gasket on the thermostat and you may need to bend the bolt hole "ears" up slightly so the gasket is compressed when the bolts are tightened down. That has worked for me in the past. There is a nice little kit available on ebay
that should also help this problem (no all that cheap, but if it helps stop the leaking (which is very common on these) it's probably worth it. The one I linked to is stainless, but there is a slightly cheaper plain steel version available as well. Cheers!
1997 F250 SC 4x4, E4OD, 4.10 LS, Basically Stock, Relocated Block Heater Plug, External Trans Filter, Tru-Cool Max, I/C Mounted but not Plumbed
SOLD - 1994 F350 CC DRW 2WD PSD, 5 Speed, 4.10 LS, SBC Con-O, Baldwin Filter, Tymar HPX Hose, DPPI DP, Bilsteins, $12 AIC, Coolant Filter, Explorer Overhead Console, A-Pillar w/ISSPRO Black Ice, EV Boost, and EV Pyro, Modified Pedestal, Gutted EBPV.