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D3 - Engine Bay Everything under the bonnet |
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Thread Tools | Display Modes |
#31
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My thoughts precisely... Well done !!
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Lee 2017 Nissan Leaf Tekna |
#32
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Missfire on those engine commonly is caused by carbon deposit build up in manifold. Having all apart get the manifold properly clean, check flaps for damage ... sorted
Decoke service is provided for all fsi engines by some specialists |
#33
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Says he already done manifold decoke |
#34
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Sorry missed that
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#35
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I have today removed the engine and striped it down again, I have removed all the pistons on bank 6 to 10 and found to my horror cylinder bore to number 7 is not round. It looks like the piston has been going up and down un true. All that work on piston number 8 made no difference at all. My question now is I am told these blocks cannot be bored out as there is 6mm between the cylinder walls and the dealers tell me they don't supply oversized pistons. Am I looking at scrapping the engine or even the whole car as a replacement block is way over my budget. Has anyone had this issue before or even heard of it. I can only assume that the water cooling has been interrupted and the cylinder wall has almost warped. With just a piston ring sliding square down the cylinder wall there is a gap of 20 thou where the wall is warped. Help |
#36
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Oh Bugger, enough to make your eyes water.
I feel for you. Wishing you the best of luck with it from here on, hopefully it will come right. But an off round cylinder, wow
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Ray at Wigan Pier 2014 A8L D4 4.0TFSI Gold (Sticker says "Beige") Can't leave you in a black smoke cloud anymore.. In progress, Nothing left to do. Gone 2004 A8 D3 3.0 TDI. Ebony Pearl Black (with little bits of other colours and glitter) |
#37
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Wow !! did you check that the all the pistons come up to top dead and have clearance between crank weights and piston skirt .
The broken piston was cylinder 8 ? the cylinder out of round is number 7 , so 7 and 8 are on the same bank and next to one another ? Is number 8 bore out of round aswell Bad news man , can you see why garages don't want this type of work ..... one missed thing and it all has to come back out . Any ' breaking cars ' with a full engine s for sale ? |
#38
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I think a replacement engine is the way forward |
#39
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I noticed a s8 engine for sale on gumtree the other day
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Del |
#40
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Number 8 is next to 7 and is perfectly round Its almost as if the damaged piston in 8 has been swapped from 7 as the damage to cylinder and piston match but this engine has never been out. I will tidy the garage today and have a fresh start |
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