"Ting Ting Ting" or "Psst Psst Psst" engine noise just arrived a few days ago.

Well it's always tricky to describe a noise!

It definately at 1/4 or 1/2 or 1* engine speed anyway! Seems to be at the back end of the engine.

Could it be valve recession causing a non-sealing valve? Is this common? The engine seems to be running smoothly tho, not like its losing compression.

When I stop the engine I hear some compression discharge like when you bar an engine over by hand. Might be normal but I'm paraniod.

Engine seems to fun fine, no black smoke, power seems ok, as is fuel consumption.

Anyone had a similar experience, please let me know.

many thanks

- (#13668) Mark, 8 Oct 04 13:05

Sounds strange Mark but, I would check the exhaust manifold and the exhaust pipe flange where it leaves the turbo, also the flexible joint at the end of the rigid downpipe. We sit in close proximity to these engines and, probably, get used to a few asthmatic noises but, the noise which you hear as the engine stops, could be a small exhaust leak as the engine & exhaust pipe flexes.

- (#13668) John Davis (Leics), 8 Oct 04 15:34

hi. got your web address from ukautotalk.co.uk .
bought car at auction , engine seemed quiet. when warms up , rattling noise starts , sounds top end 'ish' . no change in performance, no smoke, no lights on dash. have flushed engine twice, still the same. sounds just like a tappet. can you help or tell me what tappets are like to do?

- (#13668) STEVE GIBBINS, 15 Nov 04 12:29

Steve,

Go back a page, then start a new thread with the form at the bottom of the page, or clicking the 'To start a new thread complete this form.' at the top of this one, you have ended up tagging onto an existing thread, this will probably lead to no replies.

HTH Rob.
- (#13668) Rob Drinkwater , 15 Nov 04 15:53

Just an update......... 4½ months later and she's still making the noise. Maybe slightly worse but she's done a quite a few miles since the noise started. Sounds like a VW Camper!

I can't trace it at all and have tried several times. The exhaust is looking a bit tired tho. I'm hoping it'll last until the MOT and it'll get diagnosed by a proffessional. (One mechanic had a go but couldn't locate it either.)

I'll let you know if it's anything interesting. I'm betting on the EGR valve joint but I can't feel any blowing or see any sooting.

Seasons greetings

- (#13668) Mark, 28 Dec 04 05:09

Having had another good feel about, I can feel hot gas puffing out around the head to block joint at the back left of the engine underneath No.4 intake port.

Obviously I'm now suspecting the head gasket but I've no evidence of gassing coolant. Is it possible for the head gasket to leak in this manner? The engine still runs well. I'd of thought it would it would run a bit rough.(missing) what with all that compression disappearing.

Anyone had a similar experience? Is there a possible leak path that misses the coolant holes on the head gasket? I'd have thought a inlet manifold leak would give a constant hiss. (there won't be much boost at idle anyway)

Any advice most welcome!!

- (#13668) Mark, 8 Jan 05 11:30

It's possible for the gasket to leak in that manner, yes. But don't discount the inlet manifold- it'd be a lot easier to sort. As there's no boost at idle, you might spray some WD40 around the manifold joint and see if the revs rise...

- (#13668) david miller, 8 Jan 05 13:55

General comments: It's good to see a persistent thread like this. Often we get interested in a snag but then hear no more. Assuming we're talking about the 2CT, it seems to me that they do make different odd noises from time to time that can lead to a kind of paranoia that is best dealt with by doing the obvious checks and then trusting the underlying Toyota toughness. In other words if/when it breaks it probably won't let you down completely. I suspect that I drove mine for more than a year with oil consumption rising, then smoke levels, due to an undetected cracked piston gradually getting worse - that's a comment on their toughness rather than a suggestion what's wrong with yours! Keep us informed.

- (#13668) Dave Mason (Sussex), 10 Jan 05 03:29

I've just removed the head on mine because of overheating problems. I suspected (hoped!) head gasket but I could find no trace of the gasket passing anywhere. Then I saw a crack across No4 valve seats; which just happened to coincide with a lot of swear words!!

In hindsight, and like Dave has just said, I think it has been a problem that has steadily been getting worse since I've had it (about 1.5years). I have heard a very faint, but regular, putt,putt,putt noise from the back of the vehicle through the exhaust. Not enough to make it misfire or anything - ran lovely and smooth and started 1st time, every time.

I have thought I'd got an exhaust valve on it's way out which I would need to attend to....some day! Well, stitch in time and all that, I've certainly paid the price. Recently, I'd heard a more audible noise which was beginning to sound more like a squeak from the exhaust. I knew then that I definitely had got a valve gone and it was time for action. Unfortunately, because of Christmas and all that, I did not act quick enough and the blown valve has obviously caused heat build up and weakened the joint between the two valves, and, coupled with a long motorway run on Boxing Day resulted in the poor old thing not being able to cope anymore; and the rest is history, as they say.

So, what I am trying to say in this long winded way is that, like I didn't, you obviously have a problem and it would be best to sort it now if you can than wait any longer.....

Whilst writing this, I have just this minute popped into my garage to look at my dead head. Although like David says, it is physically possible for the head gasket to blow externally in the area you describe without catching the water jacket, in reality I think it would be quite unlikely because for you to be able to feel it, it would have to be a pretty bad leak.

To try and locate the exact location of the noise, have you tried listening through a piece of pipe? That clear braided type water hose is good and possibly stick a funnel in the end of it for the listening piece. Move the end of the pipe around the area where the noise is coming from and you should be able to find the source. With it being inlet side there should not be any pressure build-up in the inlet manifold (no boost, but even if there was boost it would be a constant pressure wouldn't it, no regular putt putt?). Though this is my first experience with diesels, that leads me to think that it could only be a leaking inlet valve blowing back, or that exhaust EGR thingy leaking? For it to be an inlet valve, and to leak like it seems to be doing, it would have to be one hell of a leak which I suspect would cause a misfire. Also, if it was a valve it would be a fairly slow regular noise. If it is a blow from the EGR valve, or from the pipe to it from the exhaust manifold, it would make the noise on every firing stroke, but not I presume hinder engine running in any way.......So that's it.....I'm putting my money on that (if I've got the right area!).

I hope it is for your sake....Should keep the expense down a bit!

Stewart

- (#13668) Stewart, 10 Jan 05 16:31

Confirmed as head gasket.

After long deliberation we don't need a 7 seater now the kids have grown up as there's rarely more than 2 of us in it, so we're gonna try to PX it as it is. (Unless anyone out there is interested in taking of my hands! G reg, 90k km, 4wd, 2ct, royal lounge spec, in Uttoxeter area, open to offers! email above)

Mark

- (#13668) Mark, 12 Jan 05 09:05

Phew, I'm glad I didn't say I'd eat my hat!!

- (#13668) Stewart, 12 Jan 05 11:12