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> Order Of Cylinders (alfa Romeo 146 1.6 8v Boxer), What ordering of cylinders has an alfa 146 boxer engine?
L0rdK
post 28th August 2010 09:55
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1.3 8v
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Hi all, i am new to this forum so hi to all!

I have a maybe weird question...What ordering of cylinders has an alfa 146 boxer engine? What is the numbering of cylinders...where is first cylinder, second...and so. My girlfriends alfa is running on 3 cylinders (i had tried to remove cables from plugs while the engine was running and when i removed one cable, the one that is positioned as first from front of the car on the right side the sound of engine doesnt changed - so that cylinder is the problematic). I have suspicion that ordering of cables do not match the ordering of fire order. I know that fire order is 1 - 3 - 2 - 4 but i dont know which cylinder is first, second, third and fourth. Now, from the actual connection of plugs and ignition unit the ordering should be (viewed from the front side of the car):

first cylinder - left side, first
second cylinder - right side, first
third cylinder - left side, second
fourth cylinder - right side, second

so the third and fourth cylinder is more closely to flywheel.
But i have doubt that this is the correct one. So if anybody know - What is the correct ordering of cylinders on alfa 146 1.6 8V boxer engine?
But maybe this is not the problem with that problematic cylinder but i want know this question because it is quite fundamental :)

Thank you for your response. Have a nice day.
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sudqv
post 28th August 2010 12:58
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1.4 16v
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your correct with the firing order, the cylinder layout is this. same as my sud wink.gif



not that obvious unless you look closely but the left hand bank of cylinders (as viewed from in the car, not stood in front of the car) is staggered slightly back from the right, notice the gap between the cam pulley and head face on that side. the crankpins are all seperate in the same way as a regular 4 cylinder engine, not shared like on some V8's thumbsup.gif

hope that helps

This post has been edited by sudqv: 28th August 2010 18:54


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L0rdK
post 28th August 2010 13:35
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1.3 8v
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Thank You for your response...great.

OK so my problem with the "second" cylinder not fireing is in something else. I changed sparking plug + checked that plug is sparking + checked injector + check that the cylinder have right pressure .... hmmm maybe cam belt is in wrong position but in that situation either the cylinder 2 and 4 should be wrong not only cylinder 2.

OK, i must think about that....

Any ideas are welcome smile.gif THX. Have a nice day.

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sudqv
post 28th August 2010 19:01
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1.4 16v
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does the 1.6 8V have the same cam covers as on my sud? or the ones like on the 1.7 with non-removeable covers? not that up on the boxer 145/6 engines tbh.

if you have removable cam-covers then take the cover off on that side and check the vlave clearances & for any sign of wear on the cam lobe.
if you've done a compression test & that's come up normal, and swapped plugs/leads etc for other cylinders that are ok then it must be valve related?

as yopu say, if the belt had skipped a tooth or 2 then No.4 would be off also.

saying that a guy over here who rallies a 33 with a 1.4 16V (long story, mix & match engine) had it recently where the car droppe onto 3 cylinders and it had jumped a tooth or 2? we can't explain how that worked either biggrin.gif

don't ignore the obvious though, get the cam-belt covers off and check the cam timing. also make sure the tensioner hasn't come loose or the bearing collapsed.

good luck wink.gif


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L0rdK
post 20th September 2010 10:03
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1.3 8v
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Hi, I am back smile.gif

So the problem is broken hydraulic tappet on exhaust valve and also wear damage on corresponding cam. It is bad. I have to find replacement.....

Check the pics.
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xyy81t
post 20th September 2010 13:32
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1.6 16v
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whoa, wonder how that happens


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kriss
post 20th September 2013 13:24
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QUOTE(L0rdK @ 20th September 2010 13:03) *
Hi, I am back smile.gif

So the problem is broken hydraulic tappet on exhaust valve and also wear damage on corresponding cam. It is bad. I have to find replacement.....

Check the pics.


i also had the same problem..i believe that this happened because my engine was leaking oil very often..not burning oil just leaking.. and after 40000km i had the same damage as yours..
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hunt
post 21st January 2016 16:38
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Thanks for the post, interesting information, I had a same problem!


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