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Old 05-19-2013, 03:02 PM   #1
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OVERHEATING AFTER CAM INSTALL

I installed a new cam and and now its overheating. Am i missing a step that i dont know about. i changed the thermostat after it started overheating. i dont believe it to be the pump cause it worked just fine before. is there a way to prime the pump or test operation?
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Old 05-19-2013, 03:03 PM   #2
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Tune?
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Old 05-19-2013, 03:05 PM   #3
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i loaded a new tune from jre
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Old 05-19-2013, 03:08 PM   #4
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When you say changed the thermostat after overheating. Was that back to a stock 180?
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Old 05-19-2013, 03:11 PM   #5
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yep 180 from
napa
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Old 05-19-2013, 03:12 PM   #6
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fans plugged in ? are they coming on ?
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Old 05-19-2013, 03:13 PM   #7
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yep fans are working
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Old 05-19-2013, 03:14 PM   #8
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What's your coolant temp at?
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Old 05-19-2013, 03:15 PM   #9
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it hit 230 and still climbing before i shut it down
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Old 05-19-2013, 03:19 PM   #10
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Try a oem tstat. After market tstats fail more often then not.
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Old 05-19-2013, 03:30 PM   #11
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head gaskets for sure on correctly? they CAN go either way. may just have big air in the system still. to bleed the system i like to give it some revs, helps the flow change and in turn helps with the air. also sometimes it's better to have the cap on it, let it get above 200, then shut her down. squeeze the hose at the thermostat to radiator. which reminds me, is that hose getting hot ? compare your top hose tot he lower hose, feel the same ?
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Old 05-19-2013, 03:30 PM   #12
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Is there a air pocket in the system, leave the cap off and run let the coolant flow, you should see it move, it may burp several times too.
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Old 05-19-2013, 03:37 PM   #13
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Is there a air pocket in the system, leave the cap off and run let the coolant flow, you should see it move, it may burp several times too.
This.... u have to let it run with the cap off and slowly add water and anti freeze till you get it full again.

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Old 05-19-2013, 03:46 PM   #14
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head gaskets for sure on correctly? they CAN go either way. may just have big air in the system still. to bleed the system i like to give it some revs, helps the flow change and in turn helps with the air. also sometimes it's better to have the cap on it, let it get above 200, then shut her down. squeeze the hose at the thermostat to radiator. which reminds me, is that hose getting hot ? compare your top hose tot he lower hose, feel the same ?
i didnt remove the heads i will try that with the revs at 200* and see if that helps and the hoses are not the same temp
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Old 05-19-2013, 03:49 PM   #15
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i didnt remove the heads i will try that with the revs at 200* and see if that helps
I have found the revs here and there help do it quicker. just shut it down before it gets too hot, as you have been doing. don't rev it and shut it off with the cap off though, it will come back out the radiator.
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Old 05-19-2013, 03:51 PM   #16
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ok i going to try it right now
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Old 05-19-2013, 04:05 PM   #17
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well its sitting at about 212 and 210 and i forgot to say i put a 25% underdrive balancer on too
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Old 05-19-2013, 04:07 PM   #18
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upper and lower hoses both hot ?
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Old 05-19-2013, 04:08 PM   #19
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no the top is hot but the bottom isnt
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Old 05-19-2013, 04:12 PM   #20
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thermostat not opening yet. air in the system. let it cool a bit, then give it some revs. or, with it off, slowly open the radiator cap to release the pressure and leave it off for a bit. you can squeeze the lower several times to help push on the thermostat. it will purge. just takes some time, sometimes.
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Old 05-19-2013, 04:15 PM   #21
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its got to be air there was little pressure when i removed the cap but it maintaining at 212 if i rev it , it drops 5*
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Old 05-19-2013, 04:15 PM   #22
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yup, just gotta work it through the system. turn your heater on. when that gets hot, you know it's flowing. this is where the revs help.just rev to about 2500 or so, you can hold it there for a few seconds, let it idle, rev a little bit, let it idle....
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Old 05-19-2013, 04:16 PM   #23
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ok will do
thanks for the help
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Old 05-19-2013, 04:32 PM   #24
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ok will do
thanks for the help
no problem
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