Mrz car has all of a sudden developed a very noisy timing chain rattle. Spent a lot of money on the car over the last year. How many hours labour am I looking at to get this fixed, including the chain & tensioners and whatever else is in there? cheers
morrisman1,
Sep 26, 9:27pm
is it constant? Maybe the tensioner has a fault. The SR motor doesn't have a reputation for bad timing chains, especially the later ones.
I personally would try removing the tensioner and checking that its operating, then reinstalling before doing anything else. Its held in by a couple 10mm nuts just around the back of the head and is reasonably easy to get to.
Unless the maintenance has been non-existant Id be very surprised if the chain itself was at fault. To check the tensioner you could do it in an hour labour. to replace the chain then youd be looking at approx 4 hours, thats what I reckon I could do it in, anyway, but the trouble is you cant easily reseal it against the head gasket - you have to poo it up with silicone gasket, or to do it properly you have to remove the head.
differentthings,
Sep 27, 4:41am
Yep.I looked into doing ours. You really should remove the head to replace it. Ours is only noisy for a couple of seconds when you first start it up so I decided to live with it.
butterfly05,
Sep 27, 5:16am
Could be a faulty chain tensioner? I know on the older sr20's nissan actually updated the tensioner to a slightly longer/better acting one due to an issue like this.
differentthings,
Sep 27, 5:21am
Yes it might be, but since I have a spare motor sitting in another car I decided to drive it until it dies and then I would just replace the whole motor. It's been like that for over a year now and I don't think it hasn't got any worst.
llortmt,
Sep 27, 6:15am
I'd be replacing the hydraulic tensioner first I doubt VERY much its the chain itself. However, If it IS and you've done the tensioner and just want to shut it up. If you remove the rocker cover you will find a chain guide plate between the two cams. If you were to put two thin washers under the mounting bolt holes of that (thus raising it/creating slightly more clearance) it will probably shut it up, however is a total bodge. (that I have see quite a few times!). That said IF it is the chain I'm surprised you're not getting Cam/Crank sensor codes and the MIL lit.
morrisman1,
Sep 27, 6:30am
The later motors dont have that chain guide up the top. Not sure why but Ive only ever seen it on the early high port motors.
not 100% sure but I think the sr20ve has the later chain tensioner. My recommendation still stands to inspect & clean, maybe replace that first
dasfi,
Sep 27, 9:43am
Sweet as I will have a look at the tensioner some stage, Car has done 180ks had a good service history before us and I change the oil every 5ks and filter every ten with quality products.
dasfi,
Sep 27, 12:35pm
Problem is sorted now and its quiet as, Alternator actually came off while driving, Bolts were gone and must have been vibrating and making a racket against the head. All bolted back up and sweet as. :-) have never heard of that one happening before
mainlander05,
Sep 27, 3:42pm
Well how about this one.was told by a Suzuki garage my tension er bearing was the noise,we even tracked down with a stethoscope. Bucks later and still noisy,I found a lose bolt on exhaust heat shield.no bucks and noise gone.
morrisman1,
Sep 27, 7:22pm
Good result dasfi. Did the bottom pivot bolt come out too or just the tensioner ones? Ive had the tensioner one come loose a few times, it sits there rattling.
dasfi,
Apr 27, 8:36pm
The bottom pivot bolt had come all the way out aswell, Glad that was an easy fix and not what it first sounded like.
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