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**shoeb2015** · 02-23-2013, 01:16 AM

Originally posted by ravi@17bhp View Post

I have been using this Honda Throttle FS 10w30 oil very recently from just 250 kms. Previously I had been using 10w40 Sprinta FS. This metallic sound was there when using the 10w40 too. Its been there since 7-8k kms.

Since 7-8k kms or since last 7-8k kms ?
Are you still running on factory timing chain and tensioner ?

Try to isolate the suspected part one by one.
Start by changing the oil to a thicker oil such as 20W40 grade,this to some extent will reduce the possibility of piston slap which can occur due thinner oil at high temperature .
But keep in mind that when the engine and oil is very hot,some light noise is 100% normal.(You can re-use your FS oil later,just drain it and store in a clean bottle).
Use a long screw driver(preferably with a metal hand grip end) and use it as a mechanic's stethoscope.
Depending upon the location of the noise,the list of suspected parts can be narrowed down.(Tappets,chain,piston etc.)

Keep us updated.

**James** · 02-23-2013, 04:17 PM

Originally posted by James View Post

The cam chain tensioner on my 05 zma finally dropped dead today. Replaced it with a ZMA tensioner that cost around 420 bucks.

Update: around 6k later, the tensioner gave up! So much for pricol quality! :/

**shirish** · 02-23-2013, 07:00 PM

@psr sir/ashwin/sriram and other experts: how do u rate motul 3000 15w50. Wasnt able to find 20w40 so went for this. Got 1ltr bottle for rps 239

**psr** · 02-23-2013, 08:26 PM

Originally posted by shirish View Post

@psr sir/ashwin/sriram and other experts: how do u rate motul 3000 15w50. Wasnt able to find 20w40 so went for this. Got 1ltr bottle for rps 239

w50 is too thick and bike will not rev freely,your top speed will be low, and FE will also get affected......If not in Motul try Shell AX5 or AX 7,....or Valvoline 4T, or Gulf pride 4T,...but never go for Castrol since there are many fakes...

**ravi@17bhp** · 02-23-2013, 10:49 PM

Seems the Cam Chain Tensioner gone kaput. There is a plasticky 'lak lal lak' sound when the engine is very cold (sound comes near the cam chain area; may be cam chain hitting the guides?). It goes away when the engine gets hot. The current chain tensioner is made by Pricol and I replaced it 13k kms back. Am I right that this is tensioner issue?

**psr** · 02-23-2013, 11:06 PM

Originally posted by ravi@17bhp View Post

Seems the Cam Chain Tensioner gone kaput. There is a plasticky 'lak lal lak' sound when the engine is very cold (sound comes near the cam chain area; may be cam chain hitting the guides?). It goes away when the engine gets hot. The current chain tensioner is made by Pricol and I replaced it 13k kms back. Am I right that this is tensioner issue?

If the tensioner goes bad then it will also cause problem to the rest of the associated components....because the timing chain will become loose and slap all around the inside of bore cavity....you are likely to have Timings chain guide, and timing chain also going Kaput.....include cam sprocket in the list if you are going to be unlucky...
So it is best to open the head at the earliest and change defective components,before further damage....try not to use the engine till this is set right.

**ravi@17bhp** · 02-23-2013, 11:54 PM

Originally posted by psr View Post

If the tensioner goes bad then it will also cause problem to the rest of the associated components....because the timing chain will become loose and slap all around the inside of bore cavity....you are likely to have Timings chain guide, and timing chain also going Kaput.....include cam sprocket in the list if you are going to be unlucky...
So it is best to open the head at the earliest and change defective components,before further damage....try not to use the engine till this is set right.

I have replaced cam chain last time around 10k kms back, along with guides. The sprockets appeared fine at that time. The tensioner was also relatively new, just 13k kms. I had to ride for 200 kms today and the bike was normal all the day. That sound appeared today morning when I started and in the evening when I kept my bike idle for 4 hours. As soon as the engine is a bit hot, the sound was gone. And it didn't recur again. Bike behaved normally without any issue. I am thinking to replace the tensioner initially and see how it does. If anything still wrong, then I will open the engine. Or should I open the head and see directly?

**psr** · 02-24-2013, 12:07 AM

Originally posted by ravi@17bhp View Post

I have replaced cam chain last time around 10k kms back, along with guides. The sprockets appeared fine at that time. The tensioner was also relatively new, just 13k kms. I had to ride for 200 kms today and the bike was normal all the day. That sound appeared today morning when I started and in the evening when I kept my bike idle for 4 hours. As soon as the engine is a bit hot, the sound was gone. And it didn't recur again. Bike behaved normally without any issue. I am thinking to replace the tensioner initially and see how it does. If anything still wrong, then I will open the engine. Or should I open the head and see directly?

Replace The tensioner first ,and then observe if the sound comes up again...but the problem is strange and ,new.....

**pixantz** · 02-24-2013, 12:18 AM

Originally posted by ravi@17bhp View Post

I have replaced cam chain last time around 10k kms back, along with guides. The sprockets appeared fine at that time. The tensioner was also relatively new, just 13k kms. I had to ride for 200 kms today and the bike was normal all the day. That sound appeared today morning when I started and in the evening when I kept my bike idle for 4 hours. As soon as the engine is a bit hot, the sound was gone. And it didn't recur again. Bike behaved normally without any issue. I am thinking to replace the tensioner initially and see how it does. If anything still wrong, then I will open the engine. Or should I open the head and see directly?

Timing tensioner going kaput can make things really ugly at any point of time. It may be good for 6-8 months or so or then give up in 8-10 kms also. And when that happens, to put things simply, your timing gets f**cked up instantly and then we all know how costly an affair that would be. Bent valves, kaput rockers, busted cam shaft, the works. And worst of all it can happen in the most inconvenient of places. Happened to two of my group buddies who were proudly claiming that they are not going to change the tensioner as nothing happens. They are smarter now....

**ravi@17bhp** · 02-24-2013, 12:38 AM

Originally posted by pixantz View Post

Timing tensioner going kaput can make things really ugly at any point of time. It may be good for 6-8 months or so or then give up in 8-10 kms also. And when that happens, to put things simply, your timing gets f**cked up instantly and then we all know how costly an affair that would be. Bent valves, kaput rockers, busted cam shaft, the works. And worst of all it can happen in the most inconvenient of places. Happened to two of my group buddies who were proudly claiming that they are not going to change the tensioner as nothing happens. They are smarter now....

Just today I noticed the sound. I understand what would happen if the timing goes wrong. Just give me a day so that I can replace the tensioner. If it really goes in the first kilometer of tomorrow, thats my badluck. Can't help it

Originally posted by psr View Post

Replace The tensioner first ,and then observe if the sound comes up again...but the problem is strange and ,new.....

I will replace it tomorrow morning; hope I can source the part. My bike has become a mystery to me. And, on any ride, it doesn't show any different signs; it just runs normally. Lets see how it goes after changing the tensioner. After that I will just use the bike normally ignoring those mystery sounds. If something goes kaput, I would replace all the parts, including bore and conrod bearing.

**phanikar** · 02-24-2013, 08:13 AM

@Ravi : the exact problems I faced few days back. Also is the sound at its max at around 3K rpm? Got the tensioner and guide changed and the sound is vanished. Rode around 200kms after changing it, the sound hasnt come back. Had got the timing chain, sprockets, tensioner and guides in hand just in case anything else has also worn out. Costs 1150 for all the spares mentioned above. Tensioner + guide costed around 55o bucks .

Thank You PSR sir for the help

Sent from my GT-I9082 using Tapatalk 2

**ryan.virgo** · 02-25-2013, 12:55 PM

Originally posted by psr View Post

w50 is too thick and bike will not rev freely,your top speed will be low, and FE will also get affected......If not in Motul try Shell AX5 or AX 7,....or Valvoline 4T, or Gulf pride 4T,...but never go for Castrol since there are many fakes...

What would happen if I use a fully synthetic oil? Is fully synthetic not recommended for zma?

**pixantz** · 02-25-2013, 01:18 PM

Originally posted by ravi@17bhp View Post

I have cleaned centrifugal filter when I changed clutch assembly around 10k kms back. I don't think ZMA has oil strainer like Honda current engine blocks. Anyway I would open the clutch and check at my next oil change.

There is a rectangular oil strainer which is lodged in a groove kind of space near the bottom. Cant remember if you have to remove clutch assembly to see it, but its there. I'll never forget it because it caused me an expenditure of about 4k once😡

Sent from my iPhone using xBhp Connect

**ashwinprakas** · 02-25-2013, 07:09 PM

Originally posted by ryan.virgo View Post

What would happen if I use a fully synthetic oil? Is fully synthetic not recommended for zma?

Everything below double ester is good for the ZMA. I have'nt personally tried double ester but I've heard of many riders complaining of head gasket leaks after using Motul 300V Double Ester.

**ryan.virgo** · 02-25-2013, 08:07 PM

Originally posted by ashwinprakas View Post

Everything below double ester is good for the ZMA. I have'nt personally tried double ester but I've heard of many riders complaining of head gasket leaks after using Motul 300V Double Ester.

I was tempted to try out Honda throttle that's why I asked. Will stick to shell ax5 as of now

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