You used new head bolts and gasket, right?

Sounds like you might have a HG leak as you say. Pull the plugs and see if you can confirm it with an odd looking plug.

 

Hey

Oh yea NEW *everything* was used, bolts, gaskets for sure. Ever happen that you get a defective HG ?

What do I look for on the plugs ? Green tinge?

Can i dis connect fuel and crank for a bit, remove plugs and see /w a cuetip if there is green stuff on top of cyl ? or would there not be enough there to see?

Thanks,

Jonathan

 

The plug(s) where coolant is leaking in will be white(ish) Cranking with the plugs out won't put much or any coolant into the cylinder, once the system is presurized and the engine is doing its thing a lot more gets in.

 

Great

Ill give it a shot and crank it with the plugs in.... hopefully I can find the bad one.. well i guess that doesn't matter, im doing the HD again anyways :frustrated:

Thanks for your advice!

Jonathan

 

Great

Ill give it a shot and crank it with the plugs in.... hopefully I can find the bad one.. well i guess that doesn't matter, im doing the HD again anyways :frustrated:

Thanks for your advice!

Jonathan

Nah don't bother cranking it over, just pull the plugs out and look at them.

 

Hey,

Checked the plugs, no evidence of green tinge, oil or anything, their all clean. nothing comes out except for fuel on a crank. Going to drain a little more oil and see if green comes out at the start, as if its just running down inside the engine. Atleast oil sits ontop of glycol when its not mixed

Any other ideas to check?

Thanks,

Jonathan

 

Hey,

Checked the plugs, no evidence of green tinge, oil or anything, their all clean. nothing comes out except for fuel on a crank.

ics:

 

I'm thinking it could be a slight HG leak and the it only appears when up to temp.

When rebuilding the head how bad were the cracks between the valves and seats?

If you have a fiber optic light that you can put on a maglite pull the plugs after running and look for moisture differences.

I just went through the same thing after a rebuild. I overheated my head and it was easy to find the 2cm of water in number 2.

You may find nothing in the oil if it's a slight leak. For now that is...

 

Hey

thanks for the reply, Ill get some pics uptoday.

... When the head was rebuilt ... I drove it for 4000 km ok no problem.... the old valves didn't look that bad and the seats had a little carbon :S

How exactly does the fibre optic light help or are you using that just to look inside the cyl ?

How did you overheat your head after a rebuilt ? Bad pump or :S ?

Thanks

Jonathan

 

Hey

Ive got some pics up here showing the plugs. Also some videos. I drove it today for a while and it stopped smoking A LOT... which is good, but im still not convinced. Reving the engine in neutral to 3K-4K-> no smoke. Driving under power, a little puff every now and then (not always though?!), and also decel (no shift or bip in throttle), just go 40 in 2nd and coast slowly to 10 km/hr, and a small puff every now and then. It looks white to me... but im still not sure whether I should leave it or pull the HG? If anyone has the patience, download the videos and let me know what you think! Their hosted on my box here with a max up of 80 kb /sec so if its slow give it a few minutes then try again

http://jcbox.dyndns.tv/gallery/Test-Run
Link: http://jcbox.dyndns.tv/gallery/Test-Run
Thanks,

Jonathan[/url]

 

I used the fiber optic light to look down in the cylinders easier. If the problem is a faint as you're showing in the videos then it may be hard to see the small amounts of seepage.

It's hard to tell from the video what the problem may be.

The unfortunate reason for my forced second rebuild after 5,000mi was my boneheaded move of not replacing my upper radiator hose and then blowing it and trying to drive further than I should have. Once getting to water I pulled a dumb-ass move of putting cold water into the motor and then shortly thereafter turning the engine off... Immediate warp-age.

I'm running and MC2 motor and on this rebuild used a S4 20v gasket.

The reason that I rebuilt it the first time is that I had coolant leakage into the cylinder. Upon inspection of the HG it had been seeping off and on for quite some time.

 

Hey

Im thinking im going to leave it and drive it for a bit. Get the rest of the car together and then after i get some km's on it ill have an idea then. Doesn't appear to be any in the oil etc. So with a little luck it might have just needed to blow off a little steam I think that the white puffs that come only after a hard accel are from unburned gas hitting the CAT, or maybe too much fuel after I let off the throttle, ill check the plate. Also my plugs aren't the cleaned, and if i'd have been thinking I would have cleaned them first

Wow, im sorry to hear that happened. I had my rad blow and *just* as I was about to pour in room temp water I was able to stop my self. But I know it can be easy to do :S

How is the MC2 motor ? I have an MC1 ive been toyin with putting in, but with all the associated issues, I think id like to install it in a 2nd car as a toy instead of my daily driver....

Cheers

 

My NF smoked for about 5-10mi after re-gasketing it, was burning off cleaner/degreaser that got inside various bits. The block exterior also smoked, but that was a mixture of grease, degreaser and paint.....