Jump to content
SAU Community

Recommended Posts

hey guys had this problem since last week i start the car in the morning to go to work and for the first couple of seconds i get this realy noticeable loud knock ticking coming from engine bay. ive toped oil and even chacged to a full syn oil after running a high performance mineral 20w-60 now im runing a 10w-40 syb still same problem any ideas? car is fine to drive no los in oil pressure what so ever

hey guys had this problem since last week i start the car in the morning to go to work and for the first couple of seconds i get this realy noticeable loud knock ticking coming from engine bay. ive toped oil and even chacged to a full syn oil after running a high performance mineral 20w-60 now im runing a 10w-40 syb still same problem any ideas? car is fine to drive no los in oil pressure what so ever

Could be the lifters, timing belt bearings or a bunch of other things. Does it sound like this

Another easy thing to check is the timing belt cover, just remove it and see if the sound disappears. If the sound does disappear then the timing belt may be a little loose.

Edited by *LOACH*

Because it only does it when its cold its more likely to be lifters. The tick goes away once the oil pressure has built up.

U could try a engine oil flush to help remove any build up inside the lifters that are letting them bleed down.

But a few people dont like engine oil flushes as they loosen up other foreign material and gunk inside the motor

I recently did an oil change to Valvoline 10w-40 semi synth engine armor, and to my horror the engine made knocking/ slapping sound on cold starts in the morning. A couple of days later I dumped that oil and replaced it with some really cheap Gulf Western 10w-30 mineral oil, knocking sound immediately vanished. :thumbsup:

My RB20DET is low Kms though.

hey guys appreciate the feed back. Though i have had the timing kit done about 10K ago and every oild change i do i use engine oil flush. Im using penrites hpr 10 whish is a 10w 50 and the noise is more metalic like its not getting oil back to the top of the engine in time on a cold start once she is warm you shiut the engine off and start it up she doesnt do it any other reasons?

i dont think its oil filter i explained the problem to a mechanic i work with and he seemds to believe that what im describing is maine end bearings on the way out so looks like my engine is shot

If the noise dissapears after the oil pressure builds up ie a few seconds after starting then it will likely be the lifters. Try a nissan oil filter as Scott mentioned as these have anti drain back so the filter stay full and helps oil flow when cold.

I always use hpr 10 without issue's on nissans.

If the engine starts knocking at 3000rpm then i would say its big end bearing wear

yeah but thats the thing it only does it in the morning and its for like 3- 5 seconds this noise happend out of no where every oil change i do i use a full flush fresh oil filter eith wesfill or ryco mostly ryco after warm up she drives fiine

I would go with what your mechanic says, sounds like clearences are too big and the motor quietens down when the oil has taken up those clearences. . . time for a rebuild

Mine made that noise when I used the Drift filters. its fine on the current Ryco one but make sure you have the correct filter number as some don't have anti-drain back valves.

If there was a bearing problem you would know about it, and it would get noisier as the oil thinned out. Its much simpler to change the filter than rebuild the motor mate. Perhaps send an oil sample off to get tested? That would tell you how much bearing material is in the oil.

As I suggested at the very beginning and DVS JEZ has said twice. It sounds a lot like lifters. If the filter doesn't fix it and you have tried removing the timing belt cover (sometimes brand new timing belts will stretch a little before settling down) then check your lifters. It probably isn't the belt as it disappears once warmed up as DVS JEZ said however it costs nothing but a few minutes with tools to check so it is worth trying. It might not even be the lifters themselves but the o'rings on the lifters leaking which is a relatively cheap fix although labour won't be too cheap. If you find it is the lifters do some research on which ones to buy. I don't know about RB25s but for RB30s the Nissan genuine ones are great but expensive. Some aftermarket ones are as good as the Nissan ones and much cheaper whereas some are rubbish and you will have to replace them again. Unless you can get the work done for nothing you are better off replacing all the lifters at once (same goes for the orings).

Edited by *LOACH*

found the problem.. definantly big end bearings we let the car cool down again and put the car on 4 stilts and started the car whilest i was underneath and the noise is comming from the crank case so yerp big end bearings steven you were on the money. thanks everyone for the input but i guess ill have to fess up and rebuild.

Dump the oil and have a look at it, if it's got shitloads of tiny little spots of copper coloured shit it's your bearings.

If it is the bearings you can bet it was the 20w-60 mineral oil that did it.

Unless you start up your car and not touch the throttle for a good 5-10min 20w-60 oil is going to ruin your engine.

Edited by Dobz

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • Well, I can recommend the partial AV system translation CD I ordered from Car Audio Workshop in NZ. Whilst it didn't address the date issue, it has conveniently translated on-screen menu items into English, and now allows the GPS-received time to be offset in hours rather than minutes, so I can display Eastern Australian time accurately ( and bump it by another hour when daylight savings starts ).
    • Yuh, if it's 45°C outside, my car is driving in it.
    • I'd be curious to hear more. Otherwise, have you driven a modern x-trail? I wonder how it compares. Here in Australia they are/were popular for rentals and fleet vehicles. I have been in some and my impression was they are bad. But, this may have been very different in the 2000s at a good trim level. Twenty years is plenty of time to make the model worse. I do very much agree with the 2 silver cars in the garage approach. But, not driving because it's too hot would not leave a lot of time in the year for many Australians. I don't think you need to worry too much unless the car has actual issues with overheating. 
    • Back again. I returned to Japan in Jul/Aug to spend time with the car on my birthday and remind myself what all the sacrifice and compromise is for. It happened to line up with the monthly morning meet in Okutama, which I have been wanting to go to for a long time. It's a unique event at a unique spot with really rare, interesting, and quirky cars. It's where all the oldheads and OGs gather. The nighttime scene at DKF certainly has its place and should be experienced if you're into cars, but there's too much bad attention and negativity around it now. IMO the better time is Sunday morning at DKF or Okutama; it's more chill and relaxed. I'm glad I was finally able to go, but not sure it's worth the drive from all the way from Nagoya immediately the day before, unless I was already staying in Tokyo for the days right before the meet, because you have to wake up quite early to make it in time. Funnily enough though I didn't drive the car all that much this trip because it was just too damn hot. While there were zero issues and running temps were nominal and the A/C was strong, RBs already run crazy hot as it is. Sure, it took it all like a champ but something about driving these cars in the ridiculous heat/humidity bothers me and makes me feel like I'm asking too much of it. I'm just me being weird and treating the car like a living thing with feelings; I'm mechanically sympathetic to a fault. Instead I was mainly driving something else around - a KX4(silver) 2001 X-Trail GT, that I acquired in May. There's a few different flavors to choose from with Xs, but visually it's the Nissan version of the Honda CR-V. Mechanically it's a whole different story as this, being the top-trim GT, has an SR20VET mated to a four-speed auto and full-time AWD! It was a very affordable buy in exceptional condition inside and out, with very low mileage...only 48k kms. Most likely it was owned by an older person who kept it garaged and well-maintained, so I'm really happy with how it all worked out. It literally needs zero attention at the moment, albeit except for some minor visual touch-ups. I wanted something quirky, interesting, and practical and for sure it handily delivers on all three of those aspects. I was immediately able to utilize the cargo and passenger capacity to its full extent. It's a lot of fun to drive and is quite punchy through 1st and 2nd. It's very unassuming -in the twisty bits it's a lot more composed than one would think at a glance- and it'll be even better once I get better tires on it(yes, it's an SUV but still a little boat-y for my liking). So...now I have two golden-era Nissans in silver. One sports car and one that does everything else; the perfect two-car solution I think👍 The rest of the trip...I was able to turn my stressed brain off and enjoy it, although I didn't quite get to do as much as I thought. I did some interesting things, met some interesting people, and happened into some interesting situations however, that's all for another post though only if people really want to know. Project-wise, I went back to Mine's again to discuss more plans and am hoping to wrap that up real soon; keep watching this space if that interests you. Additionally, while working in the tormenting sweatbox that is the warehouse, I was able to organize most of the myriad of parts that my friend is storing for me along with the cars, and the 34 has a nice little spot carved out for it: And since it can get so stupid hot in there, that made it all the more easy -after I was standing there looking at the car and said 'f**k it'- to finally remove all the damn gauges that have mostly been an eyesore all this time. Huzzah. The heat basically makes the adhesive backing on the gauge mounts more pliable to work with, so it was far less stressful getting this done. I didn't fully clean it up or chase the wiring though; that will happen once I have the car in closer possession. Another major reason to remove all that stuff is to give people less reasons to get in my car and steal s**t while it's being exported/imported when/if the time comes, which leads us to my next point... ...and that is even though it's time in Japan is technically almost up since it's a November car and the X would be coming in March, I'm still not entirely sure where my life and career is headed; I don't really know what the future looks like and where I'm going to end up. I feel there's a great deal of uncertainty with me and as a result of that, it feels like I'm at a crossroads moreso now than any point in my life thus far and there are some choices I need to make. Yes, I've had some years to consider things and prepare myself, however too much has happened in that time to maintain confidence and everything feels so up in the air; tenuous one might say. Simply put, there's just too much nonsense going on right now from multiple vectors. Admittedly, I'm struggling to stay in the game and keep my eyes on the prize. So much so in fact, that very recently I came the closest I ever have before to calling it quits outright; selling everything and moving on and not looking back. The astute among you will pick up on key subtext within this paragraph. In the meantime I've still managed to slowly acquire some final bits for the car, but it feels nice knowing there's not much left to get and I'm almost across that finish line; I have almost everything I'll ever want for my interpretation and expression on what it is I think an R34 should be. 'til later.
    • Thanks for that, hadn’t used my brain enough to think about that. 
×
×
  • Create New...