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VVWC :: View topic - Going uphill - WTF is that? Looking for AN Other opinion.
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Going uphill - WTF is that? Looking for AN Other opinion.

 
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dailyoliver
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Joined: Oct 31, 2015
Posts: 17
Location: Sooke

PostPosted: Fri May 05, 2017 10:14 am    Post subject: Going uphill - WTF is that? Looking for AN Other opinion. Reply with quote

Hi Guys.

I was wondering if any of you guys could come on a 2 minute virtual test drive with me? Below is a quick video showing some uphill engine noise.

https://youtu.be/xlt15C53D4I

1. The metallic noise can be heard between 0.19 to 0.30.
2. Once I disabled spark plug #2 between 1:09 to 1:43 & it goes away.

So ONLY occurs under load on cylinder #2 - Just about to drop the engine and tear it down BUT before I do this - thought I better ask you fellas.

Video below - shows a quick scope under the tin around the base of the engine to the cylinders. Looks like the cylinder mounting studs are quite oily and dirty ?

https://youtu.be/Q6mE6yVInZc (0.00 to 0.10)

I did have a quick peek into the bore of #2 cylinder - I noticed some white residue in the bore on one of the valves - don't know if this tells anything?

https://youtu.be/Vr2Kxz9yx4w (0.30 to 0.35)

As mentioned will be taking of the heads - BUT knowing what to look for will be a real help. Note: I did fit new hydraulic lifters and the valves have been adjusted correctly.

Thanks guys.

Chris
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panel
Turbo
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Joined: Oct 28, 2003
Posts: 2911
Location: Victoria B.C. Canada

PostPosted: Fri May 05, 2017 5:30 pm    Post subject: Reply with quote

Have you checked out your timing ? Sounds kinda pre-ignition/pinging like. What fuel are you using ?
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dailyoliver
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Joined: Oct 31, 2015
Posts: 17
Location: Sooke

PostPosted: Fri May 05, 2017 8:28 pm    Post subject: Timing Reply with quote

Yes I have retarded the timing to 28 degrees at 3500 RPM (the minimum really). Also I use the highest octane rating fuel - bit odd that it seems to occur in only #2 cylinder?

Carbon build up was my only other thought, so flushed it with Sea Foam ?

None of the of the above have made any difference..

Thank you - Chris.
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68IIIbuggy
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Joined: Mar 15, 2005
Posts: 2010
Location: Lasqueti Island, BC

PostPosted: Fri May 05, 2017 10:56 pm    Post subject: Reply with quote

Have you checked the head torque? I couldn't hear your vid very well as I am watching it on a phone, but loose heads make a godawful hammering noise under load.
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dailyoliver
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Joined: Oct 31, 2015
Posts: 17
Location: Sooke

PostPosted: Mon Jun 12, 2017 8:49 pm    Post subject: Exhaust Leak - BIG THANKS to Josh for helping me out. Reply with quote

A big thank you to you all and also credit goes out to Josh who helped me find an exhaust leak.

Josh very kindly made a leak down tester and I used it to test #2 exhaust port.



I then made sure that the exhaust valve was open - applied some soapy solution with a paint brush and in no time found a leak. The video below shows the leak bubbling away. Tested the other port - it was OK no leak.

https://youtu.be/2ePawqObtM4

Just couple quick question(s)

1. I have a MIG welder will it be OK to us this to fix it - are these parts stainless steel as they don't seem to corrode as much?

2. Any advice about getting the nuts off - the heat must make them quite tight?

Thanks for all you help and support guys - I am so happy that I may have my bus back on the road and ready for summer!!!!

Will keep you posted Laughing

D/O
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