western Posted January 20, 2020 Share Posted January 20, 2020 at least you found something even if it disappeared in a jet of air. fingers crossed that bit of carp was the cause. & it'll work properly. 1 Quote Link to comment Share on other sites More sharing options...
ianmayco68 Posted January 25, 2020 Author Share Posted January 25, 2020 Well it’s not good , found a few cracks in the old hoses so order a new set as I’d noticed the intercooler ones were on there way out put it all back together refilled as per manual replaced caps , started her up and coolant came flowing out the coolant cap , s##t . So removed head this is the head gasket I’ve got and had fitted its an Elring. flushed head out water came out okay, only thing I found was a bit of silicone blocking this hole by no1 cylinder . Im starting to think that even though the water pump looks good it’s really not . What I thinks happening is , it’s sucking the coolant from the radiator before the thermostat opens because when I turned it off as soon as I opened the rad cap the coolant level drops to Normal but why ? Any help would be greatly appreciated cheers Ian. Quote Link to comment Share on other sites More sharing options...
steve b Posted January 25, 2020 Share Posted January 25, 2020 What's the old HG like ? your symptoms all point towards combustion pressure in the coolant , having read through this thread . Are you going to get the head pressure tested while it's off ? cheers Steve b Quote Link to comment Share on other sites More sharing options...
western Posted January 25, 2020 Share Posted January 25, 2020 same make headgasket as the I fit, it could be as simple as a blocked coolant way, waterpump would probably leak out the hole between the bearings or its shaft has failed & its not rotating inside the pump body. Quote Link to comment Share on other sites More sharing options...
Sigi_H Posted January 25, 2020 Share Posted January 25, 2020 44 minutes ago, steve b said: ... your symptoms all point towards combustion pressure in the coolant , having read through this thread . I agree Quote Link to comment Share on other sites More sharing options...
ianmayco68 Posted January 25, 2020 Author Share Posted January 25, 2020 Old head gasket looks fine will post a picture up . Quote Link to comment Share on other sites More sharing options...
ianmayco68 Posted January 25, 2020 Author Share Posted January 25, 2020 Only slight Mark was round where the water way had the bit of silicone in it . Quote Link to comment Share on other sites More sharing options...
Peaklander Posted January 25, 2020 Share Posted January 25, 2020 Is that a leak path at number one? to water? Quote Link to comment Share on other sites More sharing options...
western Posted January 25, 2020 Share Posted January 25, 2020 5 minutes ago, Peaklander said: Is that a leak path at number one? to water? No, that's a pushrod hole, not a coolant gallery. 1 Quote Link to comment Share on other sites More sharing options...
ianmayco68 Posted January 25, 2020 Author Share Posted January 25, 2020 So even though the head gasket looks good and the head is perfectly flat ( I've used a straight edge ) and shows no sign of cracks could the problem still be combustion pressure or would there be visible signs ? Quote Link to comment Share on other sites More sharing options...
western Posted January 25, 2020 Share Posted January 25, 2020 Would of thought there would be tell tale traces of combustion gases tracking to a coolant gallery & /or misding/damaged bits of the head gasket, Have you head the cylinder head pressure tested, there may be a unseen internal crack allowing the coolant to be pressurised 1 Quote Link to comment Share on other sites More sharing options...
ianmayco68 Posted January 25, 2020 Author Share Posted January 25, 2020 Here's some better pics of the old head gasket the few marks are where it had stuck to the block , each end of the one side , in the 1st pic the water gallery hole on the right between the push rod holes is where the silicone was stuck in and the other side , but I do have a question the coolant holes between the push rod holes have little steel plates on one side and the holes seem a bit small are you supposed to peel them off like so , would make more sense and mean the coolant would flow better . Quote Link to comment Share on other sites More sharing options...
western Posted January 25, 2020 Share Posted January 25, 2020 No to peeling the metal off the small holes on the gasket, they are meant to be there. 1 Quote Link to comment Share on other sites More sharing options...
ianmayco68 Posted January 26, 2020 Author Share Posted January 26, 2020 Sorry Ralph , I did have it pressure tested 3 years or so ago when I rebuilt the engine and truck . Everything was working fine till 6 months ago when I did the valve stem oil seals and replaced the head gasket as a matter of course then the last month or so the heater started playing up and coolant to where I am now . I have an egt gauge fitted and it hasn’t run hot for any length of time . 1 Quote Link to comment Share on other sites More sharing options...
ianmayco68 Posted January 27, 2020 Author Share Posted January 27, 2020 Well took the head to Chase engines this morning to get checked out,also took my spare along so if that ones knackered they can check that out . He had the old head gasket off me to see if they could identify if there where any failure points , and did say it looked like it had been skimmed a few times, if all checks out okay then he said it might be the block so that will have to come out. So I’m waiting on a phone call and I hope it’s good news will report back when I hear anything. cheers Ian Quote Link to comment Share on other sites More sharing options...
Ex Member Posted January 27, 2020 Share Posted January 27, 2020 (edited) Are you doing the head bolts correctly? Your third to last picture looks blown from the cylinder into the adjacent block side coolant opening. The restriction on the push rod side coolant ports is to ensure most of the flow is across the exhaust ports. The small flow on the push rod side is just to prevent stagnation on that side of the head. and that is why using silicone is a really bad idea. It breaks off and plugs those ports. Edited January 27, 2020 by Red90 1 Quote Link to comment Share on other sites More sharing options...
western Posted January 27, 2020 Share Posted January 27, 2020 This area looks a bit suspect as noted by Red90 above 1 Quote Link to comment Share on other sites More sharing options...
ianmayco68 Posted January 27, 2020 Author Share Posted January 27, 2020 Yes in sequence and as per the manual, 40nm then 60 degrees and 60 degrees again. I hadn’t took any notice of that as there isn’t a water way in the head opposite the block one. Quote Link to comment Share on other sites More sharing options...
western Posted January 27, 2020 Share Posted January 27, 2020 But coolant still gets to that point & so can combustion gases in to coolant, it could be the cause of the problem. 1 Quote Link to comment Share on other sites More sharing options...
ianmayco68 Posted January 27, 2020 Author Share Posted January 27, 2020 Quite true , will see if they pick anything up when they examine it hopefully it will be the head and not the block. Quote Link to comment Share on other sites More sharing options...
Sigi_H Posted January 28, 2020 Share Posted January 28, 2020 (edited) 11 hours ago, ianmayco68 said: Quite true , will see if they pick anything up when they examine it hopefully it will be the head and not the block. I did not look at the picture closely, but the marked spot could be a reason for it. I don't think it's the head, because the gasket has a spot that can cause such problems. Edited January 28, 2020 by Sigi_H Quote Link to comment Share on other sites More sharing options...
ianmayco68 Posted January 30, 2020 Author Share Posted January 30, 2020 Well had the dreaded phone call today , and the head was cracked so there rebuilding my spare that I left at the same time . It’s being skimmed and valves and seats recut , guides where fine thought I’d better let them rebuild it as it was an eBay special of unknown origin. 2 Quote Link to comment Share on other sites More sharing options...
steve b Posted January 30, 2020 Share Posted January 30, 2020 Fixed then , it's always good to get a definitive result . At some expense for sure but you know where you are now cheers Steve b 1 Quote Link to comment Share on other sites More sharing options...
western Posted January 30, 2020 Share Posted January 30, 2020 That's a good result then at least there was a proper fault & you weren't just chasing a 'suspect' 1 Quote Link to comment Share on other sites More sharing options...
ianmayco68 Posted January 31, 2020 Author Share Posted January 31, 2020 Cheers all , yes an expensive find but a solution to the problem , I’ll ask them when I pick the head up if they think I should pull the block and get that checked as the bloke I spoke to had the old head gasket and was going to inspect it to see if he could find a cause so he’ll confirm whether that suspect mark that Red90 spotted that I’d missed is the failure point . Quote Link to comment Share on other sites More sharing options...
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