| [ Total Views: 749 | Total Replies: 7 | Thread Id: 98902 ] |
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 68AutoBug
A.k.a.: Lee Noonan
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 posted on September 21st, 2012 at 07:31 PM |
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ENGINE PROBLEM -- Spark problem in number one cylinder -STILL HAPPENING
My engine started to pop in the exhaust and lost power over a week ago.
its a single port 1600 engine with a BOSCH SVDA distributor with Pertronix points replacement which has been in the car for about 2-3 years..
I pulled the single carby down and found nothing, put it back on.. the same thing..
took the inlet manifold/heat risers off [along with fan shroud etc] and found nothing, replaced gaskets etc..
put it back together but the battery was Dead, not unexpected as its been connected to a battery charger for many months when not driving it.. lol
Now New battery, starts, idles first kick every time...
checked the fuel mixture etc... spark plug leads and rotor and coil all checked but replaced the coil anyway..
checked the timing with strobe timing lamp..
and number one only fires randomly at idle ..
fires once every 3-4 seconds - slower idle- worse it is..
strobe light works every time on no 2 cylinder lead.
I took the centre magnetic ring off the distributor shaft and fitted it back on [not sure whether its back where it was??]
still doing the same thing at idle, but its better.. nearly firing correctly at revs [about 90%+] of the time..
Do these magnetic rings lose some of their magnetic strength? or am I looking for something else??
maybe the pick up is now faulty??
anyway, its back to ignition points tomorrow.. lol
and see How I go...
OTHERWISE ITS SOMETHING ELSE????
LEE
screwdriver has been taken out of breather hose... lol
- [size=4]Helping keep Air Cooled VWs on the road - location: SCONE in the Upper Hunter Valley - Northern NSW 320 kms NNW of SYDNEY--- [/size]
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 barls
A.k.a.: Mr indestructible
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| posted on September 21st, 2012 at 07:51 PM |
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sorted lee.
you did have the power to sort this your self you know.
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68AutoBug
A.k.a.: Lee Noonan
Aircooled Master
Beetle Restorer - Experience over 138% - YIKES --
Posts: 11654
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| posted on September 21st, 2012 at 08:31 PM |
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POST under another thread... lol
Thanks Barls
I knew You could do it but wasn't sure how.
I didn't want to have to rewrite this post
thanks
LEE
- [size=4]Helping keep Air Cooled VWs on the road - location: SCONE in the Upper Hunter Valley - Northern NSW 320 kms NNW of SYDNEY--- [/size]
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68AutoBug
A.k.a.: Lee Noonan
Aircooled Master
Beetle Restorer - Experience over 138% - YIKES --
Posts: 11654
Threads: 449
Registered: August 31st, 2002
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Location: SCONE in UPPER HUNTER VALLEY NSW
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Mood: Really Mentally Ill - all of the time -
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| posted on September 22nd, 2012 at 12:49 PM |
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well
I took the spark plug out of number one and cleaned it
and put it back in...
was still missing at idle but perfect at revs
so, I tightened the distributor clamp and its idling OK Now
I had also wiped out the inside of the distributor cap with
CRC electrical cleaner
so it looks like the distributor clamp was at fault ???
when it was loose??
Yet it has to be loose to be able to time the distributor..
never ever had that problem before..
LEE
- [size=4]Helping keep Air Cooled VWs on the road - location: SCONE in the Upper Hunter Valley - Northern NSW 320 kms NNW of SYDNEY--- [/size]
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psimitar
Son of Jim - Creator of Good
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| posted on September 22nd, 2012 at 11:18 PM |
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but did you clean the dizzy cap at the same time? tracking in the cap is more likely an explanation as a wobbly dizzy would just give uneven idle and
not a miss.
madness is in the eye of the beholder  |
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68AutoBug
A.k.a.: Lee Noonan
Aircooled Master
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| posted on September 23rd, 2012 at 11:40 AM |
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Hi
the missing at idle still occurred after I cleaned the distributor cap
I cannot see any reason why it would miss on number one cylinder ONLY at idle.. but at 8 degrees BTDC
move it to 15 -20 degrees BTDC and it was OK.. ???
talk about strange??
I haven't been game enough to take it for a drive as yet...
but its idling fine now with the clamp tightened..?
LEE
I MUST drive it... I MUST drive it... lol
- [size=4]Helping keep Air Cooled VWs on the road - location: SCONE in the Upper Hunter Valley - Northern NSW 320 kms NNW of SYDNEY--- [/size]
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 matberry
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Go hard or go home
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| posted on September 23rd, 2012 at 12:07 PM |
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As I said in the email reply, REPLACE the sparkplug with a NEW one
Matt Berry Motorsports...air cooled advice, repairs and mods Ph 0408 704 662
OFF-ROAD,CIRCUIT,DRAG,STREET,ENDURANCE
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68AutoBug
A.k.a.: Lee Noonan
Aircooled Master
Beetle Restorer - Experience over 138% - YIKES --
Posts: 11654
Threads: 449
Registered: August 31st, 2002
Member Is Offline
Location: SCONE in UPPER HUNTER VALLEY NSW
Theme: UltimaBB Pro Yellow
Mood: Really Mentally Ill - all of the time -
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| posted on September 26th, 2012 at 10:16 PM |
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OK Matt
I don't have any new plugs but will try an old Bosch plug
I have replaced the Pertronix kit with a condenser and New points .. I can't time it as the timing light doesn't work at all on Number one
cylinder
also Have fitted a New Dizzy cap and rotor
and tried another spark plug lead on number one...
still nothing...
thanks Matt... if its simple as another spark plug...
I should have guessed as I know a new plug always fixes a lawn mower..
and cleaning the old plug is usually not worth the effort...
cheers
LEE - this one really has Me stumped..??
Engine still starts easily and idles but pops now and then at revs.. it doesn't sound like its going on 3 cylinders
More like 3 1/2 cylinders... but it does vary... LEE
and as My timing light is not working at all on number one...
was ready to throw it away but I couldn't find My spare timing light, so I tried number 2 and it worked perfectly..
LEE
- [size=4]Helping keep Air Cooled VWs on the road - location: SCONE in the Upper Hunter Valley - Northern NSW 320 kms NNW of SYDNEY--- [/size]
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