Join Date: Aug 2010
Location: Calgary Alberta
Ticking/ knocking After Head Gasket issue.
I tried searching for an answer or someone with a similar problem to mine but came up short.
I have a 2000 X non-SC vg33E, and at about 185,000 kms the head gasket blew.
The truck sat for about 6 months before i had time to tackle the job. I tore it apart, had the heads machined and checked, used felpro gaskets and felpro head bolts. Everything went together quite well there didn't seem to be any issues.
Came time to do the first start up, beside the battery being dead ( charged it up and tried again ) it started up quite well and sounded great for about 15 seconds till it stalled out.. there was smoke around the crank pulley area which was strange so under closer examination we found that there was a bolt that we put in that must have been too long, that was grinding against the crank pulley, oops. fixed that right away and did another check over to make sure everything looked good to go. I should also note that there was a ton of white smoke that poured out the tail pipe, assumed this was from all the coolant and water that could be in the exhaust system still.
Started it up again, started fine, but this time theres a pretty loud and aggressive ticking/ knocking. fack... listen to see where its coming from and its in the distributor/ drivers side valve area. its for sure on the drivers side and top end. its pretty constant and consistent. it didnt get louder or quieter as the engine warmed up. if you touch the distributor its vibrating alot more than i think is normal ( cant remember what it was like before ) the common sound i hear from people with bad distributor bearings doesn't sound like the consistent knock/ticking im getting. The timing as far as i know should be good ( not sure about ignition timing as i didn't adjust that yet ) but moving the distributor in its adjusting range didnt change the sound. white smoke still coming out ( i feel this is normal until its burns off ) should also note that the number 6 cylinder ( drivers side farthest to firewall ) is the cylinder the head gasket failed.
After all of this i realized we didnt change the oil after head gasket blew.. looked at the oil and of course its milkshake city, thick and sludgy... so now im thinking that disgusting oil has circulated into the lifter and is causing some havoc. i cant say for sure though. we changed the oil, still does it. but maybe i need to do an engine treatment to free up the stick lifter, im not sure. thinking that this sound is no good we shut it down before anymore issues arise.
Anyone think they might know whats going on? I'm 2 hours away from the truck so i can't check things out efficiently, but the engine light did not come on, as far as codes.. not sure as I'm 2 hours away. its not an exhaust leak, this i know. besides seemingly running smooth the RPM did seem to hunt a tad, about a 100 or so RPM up or down after the engine warmed up. figured the ignition timing is a bit out and the computer is trying to self adjust.
Possible things i can contribute the issue to from research is:
-lifters sticking from gunky oil
-valve train issue: rocker broke etc.
-possiblt timing issue ( although seems fine. can't comfirm the 40/43 tooth count )
-possible distributor problem
Thanks for your time!! any help appreciated!