Guest barbel Posted May 21, 2003 Share Posted May 21, 2003 Hi, Sometimes I start up my Z and it sounds lovely, soundtimes it sounds like a tractor! Sometimes a few minutes driving and it'll sound great again, sometimes it goes on for as long as I'm in the car! Has anyone got a solution to this? It's had an oil change and that didn't do much good (wrong oil?). Does it do the car any harm if I stick my foot down when the tappets givin' it some? Cheers, Andy Quote Link to comment Share on other sites More sharing options...
lack300 Posted May 21, 2003 Share Posted May 21, 2003 use the car more often using the car less than once a week is not enough i have found. oil drains out the tappets. mine has done this twice because of not using over winter months...... "T"......... Quote Link to comment Share on other sites More sharing options...
james300 Posted May 21, 2003 Share Posted May 21, 2003 When you say its had an oil change. what oil was it? Castrol 10/60 works for me! A thicker oil than you used may well see the noise disappear. Quote Link to comment Share on other sites More sharing options...
b19rks Posted May 22, 2003 Share Posted May 22, 2003 mine seems to me to make kind of ticking noise from the top of the cylinder nearest the dash. Thing is when i ask my matesif they can hear it they cant:confused: I know that when its youre own car you can hear noises that no one else can. Im already running castrol 10/60 and i reckon its more "ticky" since ive used this, was on 10/40 before i believe, im going to try a bit of that extralube ZX1 (least i think thats what its called) see if that does the trick. Then again it could just be me, but a bit of friction reduction can't hurt. Quote Link to comment Share on other sites More sharing options...
51x Posted May 22, 2003 Share Posted May 22, 2003 Mine used to be noisy for about 30 secs from a cold start. It came down to poor oil flow around the heads cos the whole lump was really gummed up. Quote Link to comment Share on other sites More sharing options...
b19rks Posted May 22, 2003 Share Posted May 22, 2003 And what was the cure for it? Quote Link to comment Share on other sites More sharing options...
51x Posted May 22, 2003 Share Posted May 22, 2003 Umm... not sure you wanna hear! I don't think it was related (I had an occasional sticking valve too) but I ended up with two busted pistons, so needed a rebuild. They de-gummed it all during that. I think I was just unlucky. I could've put up with a bit of early morning clatter... but hey. Quote Link to comment Share on other sites More sharing options...
Guest barbel Posted May 22, 2003 Share Posted May 22, 2003 Hi, I can't remember the spec of the oil I'm using - though I know it's fully synthetic - 24 hour Le Mans stuff - I'll find out later what it's called. I drive the car every day and still get the noise. So will thicker oil be better? Am I doing any harm by sticking my foot down when I have the noise? Andy Quote Link to comment Share on other sites More sharing options...
SMW1 Posted May 22, 2003 Share Posted May 22, 2003 Barks, Mayber a stupid question, but are you sure that the ticking sound is not just your injectors firing mate ?. 51X, I'll be joining you in the rebuild club very shortly I fear. Hopefully not with the pistons themselves, but maybe with the rings and the valves :( Quote Link to comment Share on other sites More sharing options...
AndyP Posted May 22, 2003 Share Posted May 22, 2003 Does that mean you have the results of your compression test ? Originally posted by smw1 I'll be joining you in the rebuild club very shortly I fear. Hopefully not with the pistons themselves, but maybe with the rings and the valves :( Quote Link to comment Share on other sites More sharing options...
Guest LakesideZ Posted May 22, 2003 Share Posted May 22, 2003 My 86 300zx NA had bad lifter noises, they got progressively worse until the car started to drop a cylinder or two after sustained highway driving. My end cure was to replace all the lifters $400.00 parts and labor. This cured it for about 3 weeks, then it came back, at that point my car started to consume a quart of oil every 400 miles, so i finally gave in and bought it a used japanese import motor. But in theory, cleaning out your lifters and or replacing them should cure the problem. I've also had people advise me to throw a quart of ATF in with the engine oil and run it around like that for about 500 miles to clean everything out. But ive never tried it. Quote Link to comment Share on other sites More sharing options...
SMW1 Posted May 22, 2003 Share Posted May 22, 2003 Originally posted by AndyP Does that mean you have the results of your compression test ? LOL, yeah. 1 = 75lbs 2 = 175lbs - And we though this was the one that was screwed !!! 3 = 50lbs 4 = 75lbs 5 = 75lbs 6 = 125lbs They say they have stripped back to my timing belt and the timing is spot on. The only thing they found was the radiator was full with sludge, so I need to give this a good old flush. Does this say anything to you ?. I had a new water pump and thermo as well as a flush in October, why would it be full of sludge ? But I'll be taking it to someone I know I can trust just to double check these readings and hopefully have a cylinder leakage test as well. Funny thing is I have been offered a fully working '93 Jap Manual TT for £2.5k I may buy it and swap the engine over and other parts I need and break the rest of the car. And before anyone starts with the I'll have the manual gear box etc. I said may buy it. Quote Link to comment Share on other sites More sharing options...
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