LC S Coupe Rebuild
Started by
_judgelj_
, May 27 2012 12:34 AM
674 replies to this topic
#602
S pack
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Posted 14 March 2014 - 11:06 PM
Reading the above posts the front and rear carbs are too rich at idle and up to aprrox 1/2 throttle whereas the center carb (cylinders 3 & 4) is leaner at idle etc.
I think before you get too concerned about choosing the correct plug heat range for your engine you really really need to get the carby balance and mixture needles and settings correct.
The blackened spark plugs show the mixture settings are rich.
Edited by S pack, 14 March 2014 - 11:08 PM.
#603
_ljxu1torana_
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Posted 15 March 2014 - 12:49 AM
on your first picture you can drive a semi trailer through the plug gap.
#604
_judgelj_
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Posted 15 March 2014 - 01:13 AM
Haha that's just for testing spark.
They do seem rich but what I want to know is if they were set incorrectly or if the have richened up on their own (is that possible).
Should I maybe lean them off a few flats?
They do seem rich but what I want to know is if they were set incorrectly or if the have richened up on their own (is that possible).
Should I maybe lean them off a few flats?
#605
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Posted 15 March 2014 - 06:46 AM
The mixture settings can't change on their own. Have the carbs been balanced and tuned since installing on the engine or did you just put them on and run them with the base settings made by the carb reconditioner?
#606
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Posted 15 March 2014 - 06:55 AM
Weak spark will make a plug look rich, but I won't push it much further.
Over carbed and flooding will do it too.
How did the spark look on the tester???
Tell me what part number the coil is and is the module a genuine bosch one then you can go back to frigarsing around with your SU's.
FWIW I know jack shit about SU's...
If you want to do yourself a favour and prove me wrong then beg borrow or steal a known to be good working order coil and dizzy and try substitute them.
Over carbed and flooding will do it too.
How did the spark look on the tester???
Tell me what part number the coil is and is the module a genuine bosch one then you can go back to frigarsing around with your SU's.
FWIW I know jack shit about SU's...
If you want to do yourself a favour and prove me wrong then beg borrow or steal a known to be good working order coil and dizzy and try substitute them.
#607
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Posted 15 March 2014 - 07:01 AM
Did it look rich, puffing black smoke?So i basically pulled the plugs out, gave them a clean and car fired up beautifully.
#608
_threeblindmice_
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Posted 15 March 2014 - 10:11 AM
Correct , I had a marked hill on the was to the pub , to test my car when I was younger , and found It had to be tuned every 10 days to maintain maximum MPH over the top of the hill .The mixture settings can't change on their own. Have the carbs been balanced and tuned since installing on the engine or did you just put them on and run them with the base settings made by the carb reconditioner?
#609
_judgelj_
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Posted 15 March 2014 - 12:51 PM
Dave carbs were done post install. Bloke retired now it was his last job. He balanced the 3 with a colour tune and set the mixtures with a screwdriver under the piston. Never ran rich until the drama I had with the head. After that it puffed a bit of black smoke. Since I re did the timing it doesn't seem to be running rich but I'll have another look today or tomorrow. Maybe It's my fault for letting the car idle too long and and only driving short distances.
The spark tester has some sort of led so it was useless for this excercise. I'll have to figure out the coil part number hopefully it is stamped somewhere. The coil was rebuilt so I don't see that being an issue but you might be onto something with the coil.
If it's any help I really had to get up close to the plug to even see the spark.
Cheers
The spark tester has some sort of led so it was useless for this excercise. I'll have to figure out the coil part number hopefully it is stamped somewhere. The coil was rebuilt so I don't see that being an issue but you might be onto something with the coil.
If it's any help I really had to get up close to the plug to even see the spark.
Cheers
#610
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Posted 15 March 2014 - 04:49 PM
This is was 3&4 plugs look like. I turned front and rear carb jets 2 flats each to lean them off. Ill check the plugs after a bit of driving to see.
#611
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Posted 15 March 2014 - 09:11 PM
Show us again after a run.
Burn is hard to tell from the cleaned plug but looks a tad warm.
Get the carbies and spark sorted and you'll be laughing.
Burn is hard to tell from the cleaned plug but looks a tad warm.
Get the carbies and spark sorted and you'll be laughing.
#612
_judgelj_
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Posted 15 March 2014 - 10:28 PM
What colour should it be ideally? Like I said I backed off the offending carbs 2 flats despite the initial tune so hopefully that yields a result. I'll troubleshoot the coil as well.
That plug was after about 25mins of driving.
Should the spark look like a blue hair or should it be a lot stronger?
That plug was after about 25mins of driving.
Should the spark look like a blue hair or should it be a lot stronger?
#613
Rockoz
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Posted 15 March 2014 - 10:58 PM
Tan colour should be close.
Check Champion out online.
They may have a photographic guide to colour.
Used to be in the catalog many moons ago.
Edited by Rockoz, 15 March 2014 - 10:59 PM.
#614
_judgelj_
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Posted 15 March 2014 - 11:22 PM
i searched and found this pretty useful http://www.ngksparkp...ad.asp?mode=nml. So i dont think i'm far off.
I ended up making this to try and brack my alternator a little better.
Cut up and welded this to some bent up flat bar
Nothing like a bit of poly urethane to hide some shit gasless welding. Should hopefully present better after paint.
Edited by judgelj, 15 March 2014 - 11:32 PM.
#615
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Posted 15 March 2014 - 11:31 PM
.
Edited by judgelj, 15 March 2014 - 11:33 PM.
#616
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Posted 16 March 2014 - 07:34 AM
I'm not talking about the the mixture colour, sorry for the confusion, that is to judge the carby mixture, when I say burn, i was talking about the burn on the ground electrode, this is how you gauge heat range.What colour should it be ideally?
That plug was after about 25mins of driving.
Spark should be nice and blue, the bigger the gap, the smaller the spark will be.
In the dark is the best place to see it.
#617
_judgelj_
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Posted 16 March 2014 - 09:49 PM
We'll plugs still a bit black I'll keep adjusting them until the colour improves
#618
_judgelj_
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Posted 20 March 2014 - 10:40 PM
I'm heading into a shop to have my mixtures looked at tomorrow.
A few pics from a recent local car show
#619
_judgelj_
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Posted 26 March 2014 - 02:53 PM
So got my new mirror. Quite like it
Anyone have any ideas on how to get this out
IMG_3974_zps8e7add31.jpg
Edited by judgelj, 26 March 2014 - 02:54 PM.
#620
N/A-PWR
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CABIN ENGINE CONTROLS GALORE
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Posted 03 April 2014 - 11:41 PM
Anyone have any ideas on how to get this out
IMG_3974_zps8e7add31.jpg
What do you mean Jacob
#621
Potta
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Posted 04 April 2014 - 12:23 AM
Is that from Rares?
#622
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Posted 04 April 2014 - 07:39 AM
What do you mean Jacob
What pic is that, Dave? Wont show on my PC.
Is that from Rares?
It is actually from eBay. Best looking universal mirror on the market in my opinion. But then again i havent seen one like it elsewhere
#624
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Posted 04 April 2014 - 12:20 PM
What pic is that, Dave? Wont show on my PC.
If it is your Picture from when you uploaded it, and it never came through, just put that IMG_3974_zps8e7add31.jpg into your Computer search section, and re-post that Image again when you find it.
Hope I am thinking right. Dave I
p.s. could not find it on the NET, so it must be in your Computer
#625
_judgelj_
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Posted 04 April 2014 - 01:03 PM
Ohhhhhh smart man. I didnt even notice it. It showed once upon a time the link must have died.
Got it out now anyway but it wasnt fun/easy.
Not a bad mirror but the seller did not respond to any of my emails, awesome!
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