Stuart_B
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| posted on 3/10/09 at 03:59 PM |
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duratec engine trouble
hi all, well as f1 was on this morning i knew my mum will be waking me up, so i through i get cracking on the duratec.
so throughts were, clean teh engine, take the bits i do not want on it off, and make a blanking plate for the egr port,
so started cleaning it, one side then i finshed taht side, and through i will take the inlet maniflold off, and my dad came in the grarge and gave me
a hand.
 
engine
so took the manifold off, and look what i found:
 
inlet manifold
one off the buterflys is missing, and they are conneted with a steel rod.
i found the buterfly, it was resting on teh vaule, as it was to big to do through the vaule:
 
and why
and this is where it came out from:
 
here it is
so we took the spark plugs out, put a magent down there and did get a few metal filings.
so then we turend the engine up side down, and nothing came out, then enough round with the magent, nothing at all.
so we throught lets try and look at the piston and cylinder through the vaules, and yep the cylinder is scoured, but not sure how bad yet.
so we through a compression test woudl be a good thing to do, but i have no flywheel, so with all the plugs out and fitting one at a tiem to differnt
cylinders and turn the engien over by hand the promblem cylinder has a lower compresion, and then we put oil in to the promblemed cylinder, and it
felt simlar to the others compression.
but i did find a pices of the steel rod, crused up, in the inlet manifold, so they was in the cylinder, and came out the inlet not the exhaust, and a
pice about 2inch long as well, but not sure if that went in or not, does not look like it did.
so any throught of why the steel rod which goes through teh buterfly whould have broke?
any idea's which is teh best way to fix it?
cheers
staurt
black mk indy, 1.6pinto on cbr600 bike carb's.
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omega0684
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| posted on 3/10/09 at 04:27 PM |
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looks like the best thing for you to do is take the head off and have a good look in the bore. don't know if its just the lighting in the last
photo but is that valve bent?
hope it isn't too bad? 
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rusty nuts
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| posted on 3/10/09 at 04:34 PM |
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Common problem with the Duratec engine , have change several manifolds due to this happening. Anyone buying a Duratec engine should try to hear it
running, ANY noises from the manifold indicate the secondary butterflies/shaft have wear
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Stuart_B
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| posted on 3/10/09 at 04:37 PM |
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i do not think the vaule is bent, but not sure in teh whole state, as i am realy trying to look through a small hole.lol
i did not know that was a common promblem. dam
stuart
black mk indy, 1.6pinto on cbr600 bike carb's.
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flak monkey
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| posted on 3/10/09 at 04:49 PM |
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Only way to find out is have the head off.
Unless you know anyone with a bore scope?
If the bore is knackered and you are fitting forged pistons oversize ones are easily available.
David
Sera
http://www.motosera.com
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Stuart_B
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| posted on 3/10/09 at 05:00 PM |
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do you know what compression teh cylinders should be?
and are 88mm pistons standard or oversized, by 0.5mm, as i think the standard piston is 87.5 or something like that.
thanks
stuart
black mk indy, 1.6pinto on cbr600 bike carb's.
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rusty nuts
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| posted on 3/10/09 at 05:05 PM |
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Cylinder leakage test might be a good idea? Done without removing the head. IIRC British Trident may have posted instructions for a DIY tester?
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Stuart_B
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| posted on 3/10/09 at 06:06 PM |
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i can not seem to find that on here. any links?
cheers
stuart
black mk indy, 1.6pinto on cbr600 bike carb's.
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flak monkey
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| posted on 3/10/09 at 06:12 PM |
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Std bore is 87.5mm. So 88mm is 0.5mm oversize.
Sera
http://www.motosera.com
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Micael
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| posted on 3/10/09 at 07:15 PM |
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I would take off the head and do a full inspection.
Otherwise i would go around and think about it all the time.
Micael Moose Åman
Petrolhead and all around nice guy
"Don't leave the duck there. It's totally irresponsible. Put it on the swing, it'll have much more fun." //Sleep Talkin Man Dec 23
2009
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MikeRJ
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| posted on 3/10/09 at 07:23 PM |
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Ford Mondeo Inlet Manifold failure.
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