The Mitsubishi Pajero Owners Club®

[harvest779]

[quote="Doug Hope"]Just to let you know I have a spare coilapck or 2. Where supposed to be working when I got them. Give me a shout if you need one as I know they aint cheap from mitsi.[/quote]

Thanks Mitsi, will give a shout if there is any need, stay good

[Google]

[harvest779]

[quote="SIAC"][quote="venn105"]Send v8rick a pm not sure where u live but does travel  [/quote]

He can't get Mobil1 in Nigeria.... I think he's over Margate way, Venn!!  

Harvest779, I read somewhere once, that someone had this rattle and it was one of the cambelt tensioner pulleys that hadn't been replaced the last time the cambelt was done, so it clicked like the bearings were going. Yes, the round "stays" that direct the cambelt around.

Also, use the search button for tappets on here - there is a post about using the throttle in increasing stages to cure this... You raise the throttle in small increases to the point where the tappets are lubricated. Rather than just blasting the revs each time.
I did it on my 6G74 (non GDI) and it worked well.


Ps. nothing meant about Margate, just a joke. Have to be so PC these days  [/quote]

Thanks SIAC, your advise seems holding water.  I am keeping this for future reference and use it when ready to strip down the engine.  its quite funny you know.

I tried using the throttle and when the revs reached 4000rpm/ the engine stalled.  When I started the engine, the rattling sound became sharper and noisy than it was.  

I have taken your advice guys, I am just waiting for funds to be available to make the truck useful again.  will keep you posted once I took off the quest

[harvest779]

[quote="nick-dudley"][quote="harvest779"]Hie experts.
Recently peplaced worn out cam shaft and rebuilt engine on my 6G74 [b]which part of the camshaft was worn out? was it lobes or was there also scoring to the mains on the cam??[/b]
petrol GDI 3.5 After some revs and driving around it produced a ka-ka-ka-ka sound with whch goes with the engine revs. If it is silent, the engine wil be misfiring or loosing compression from one of chambers. The whole body wil be shaking then.

Is this an upper engine knock or tapets and how can i stop this sound. The vehicle is no longer as powerful as it was.[/quote]
You have changed the camshaft that was worn out. you havent said why it was worn out.  Sadly the 6g74 if the oil isnt changed frequently enough it does suffer from oil starvation. Be careful because it will empty the followers totally, cause slack, and the rockers will drop out on the outer banks. Lots of these suffer from crankshaft problems due to oil feed issues. really you need to take out the engine, and strip down, look for a bottom end oil feed problem. may be a partially blocked oil pump strainer, worn main bearings will also allow low oil feed to the top end, and big ends.[/quote]

Hi Nick, the pin that positions camgear and camshaft moved from the hole and the vehicle lost timing thereby causing the camshaft to break in the first chamber after colliding with the exhaust valve.  Surely, it is because the previous owner did not change the oil enough.  I think the rockers are the ones causing this knock sound.  I am taking note of the need to check strainer, main bearings.  Thanks Nick

[trekker]

Hi Harvest.

Lots of good advice there, but you have already rebuilt your engine and cam shaft end.

The solution could be expensive or not too bad, so I suggest you follow hutchy's flush procedure, that's most important. Mobil 1 is a fully synthetic oil, can you find another make to the same spec, other major players also produce fully syn oil to that 10w 30 spec.

You have little to pay by this route, and such a flush is in the right direction. Don't drive the engine with the flush oil, a fast idle is enough.

Be sure it's not a cambelt tensioner failing, that could be costly too.

Also in God's planet

[harvest779]

Hi trekker

Thanks for the advise again mate, I changed the tensioner and I fitted a new one from Mitsubishi... I changed it in September 2012 just travelled a few days, then this ka-ka-ka-ka-like-knock sound in the upper right engine.

If I had recorded the sound I would have posted onto this fora for the benefit of the team.  Will try that mate and see if the problem is solved if not, I will seek your advise as well so that my Paj will be on the road again.

because the sound if louder to reach an ear that is about 50m.  Its like a metal hitting the engine head wall I cant find the best description or similar thing but it is like a small metal hitting against the wall of engine.

Thanks mate

[harvest779]

Hallo Mates

We took down the engine and discovered that it was a knock sound. The Biggens bearings were used up and were now sliding over each other thus the tap-rattle sound.  The crankshaft is worn out and considering buying a new one.  Anyone supplying this crankshaft and the bearings esp in Bostwana and South Africa.

kindly qoute to my email:

spencerharvest@zol.co.zw or call me on +263715762509

[harvest779]

Fellows Paj Owners

        I thank  Lord God Almighty, a Mitsubishi specialised Motor mechanic rebuilt my engine and did came to life again.

Bought overhaul kit, new crankshaft etc.  He seems to be a good artisan. Now left with just one problem; yet to see if the disconnection from the battery healed the gear box's safety mode.

However, the first run was great but a knock sound emerged after a 3k revving for second run.  It was a 6mm bolt in the exhaust chamber again, rattling like a knock sound.  Will remove it this weekend and see if the problem disappear.

THE NOVEL CASE IS, THE ROCKER ON A HYDRAULIC LIFTER WAS DISPLACED. CHECKED WITH MECHANIC BUT COULD NOT DIAGNOSE THE PROBLEM AT HAND.  MY QUESTION IS HOW COULD IT FALL OFF FROM THE TIGHT HOLD OF THE CAMSHAFT. IS MY VALVE BENT OR IS MY LIFT DEAD IN THIS CHAMBER.  I do not think my mechanic took a critical thinking on this question. Will sound him and get his side.

[hutchy]

there is a way of doing a leak down test on the lash adjuster but you will have to remove them it involves a press a precise weight and measuring the time it takes for the weight to compress the lash adjuster..there is a ball inside the lash adjuster with a spring and a seal if anyone of those fails then the lash adjuster is knackered

[harry_huddini]

Wow dude glad you finally got it fixed!

Can't believe you posted almost a year later confirming the repair!! Hope she runs well now

I think I have to do the same job with mine did mixing oils/dirty oil cause oil starvation at cams, scored the RHS cam pulley journal, then the metal filings went throughout the oil galleries and to the bottom end?

Peace out!

[harvest779]

sure the motor is now running fine one. only left with gearbox in safe mode now.

I check the gear box wiring I discovered there is a connector coded 10982 which had nothing connected to it. hope tomoro diagnosis will save me well. will keep you posted