madKE35coupe Posted November 18, 2011 Report Share Posted November 18, 2011 hey guys as some of you may know i bought a mx83 cressida for my partner to get around in. i hadnt really taken much notice but it seems to be using a bit more water than usual, and the reservoir fills up to the top.......and doesnt go back into the radiator when it cools. I'm pretty sure it isnt a blown head gasket, which was my first thought, since the car still runs and drives as well as the day i bought it. are there any other reasons why this could be happening? its a 7m-ge too. any help would be great. cheers brendan Quote Link to comment Share on other sites More sharing options...
Evan G Posted November 18, 2011 Report Share Posted November 18, 2011 seams like exhaust gases are escaping into the coolant. do a TK test to comfirm (checks for carbon monoxide in coolant) does the coolant have a dark tint to it? Quote Link to comment Share on other sites More sharing options...
philbey Posted November 18, 2011 Report Share Posted November 18, 2011 Does it have a cap? If so, replace it. 1 Quote Link to comment Share on other sites More sharing options...
Hiro Protagonist Posted November 19, 2011 Report Share Posted November 19, 2011 It's a 7M, a blown headgasket is always a possibility (and could have had it for a while). I'd definitely do further tests (TK, compression etc) before ruling it out. Quote Link to comment Share on other sites More sharing options...
LukeAE71 Posted November 19, 2011 Report Share Posted November 19, 2011 When u rev it does it make a rushing water sound under the dash? If the coolant doesn't return when cool I'm going 100 percent for a bhg sorry Quote Link to comment Share on other sites More sharing options...
altezzaclub Posted November 19, 2011 Report Share Posted November 19, 2011 Make sure it has a thermostat then start it up one morning without the radiator cap on and the rad fill. Let it idle for 10 or 15min & if the HG is leaking you will get the water flowing out of the rad all over your feet, as the bubble push it around backwards because they can't get past the t'stat. Once the t'stat opens all is fine as the gas bubbles leak out via the overflow bottle. A six will run much smoother with a leaking gasket than a 4cyl. Look for a lazy cyl by pulling off the plug leads one by one or hook a compressor up and do a leak-down test of each cyl. Quote Link to comment Share on other sites More sharing options...
LittleRedSpirit Posted November 28, 2011 Report Share Posted November 28, 2011 7m-H2o=BHG 1 Quote Link to comment Share on other sites More sharing options...
madKE35coupe Posted July 10, 2012 Author Report Share Posted July 10, 2012 well she has lasted this long :D until not long ago when it started running on 5 cyl and sucking the water down like a sieve. in the process of replacing hg and head studs so will post some pics of progress Quote Link to comment Share on other sites More sharing options...
19914afc Posted July 10, 2012 Report Share Posted July 10, 2012 Would have been wise to replace it back then to reduce the risk of stuffing the head, did you have the head skimmed and crack tested? Doesn't cost much at all. Quote Link to comment Share on other sites More sharing options...
madKE35coupe Posted July 10, 2012 Author Report Share Posted July 10, 2012 Plan to once the head is out dude, hopefully getting it out tonight and getting it ready to send to machinist tomorrow. Anyone done of these before, and any tips or hints? Quote Link to comment Share on other sites More sharing options...
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