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WESTYJACK Samba Member
Joined: February 21, 2017 Posts: 266 Location: LAVAL,QC CANADA
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Posted: Wed Sep 20, 2017 2:48 pm Post subject: Ignition Problem |
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i try to start my bus 1978
check the ignition circuit
on ignition coil between 15 and 1 test light trigger on cranking
but no spark at coil
try new coil same thing
12 volts at 15 key on
on 15 terminal got 2 black wire comming from the front of the bus
on 1 terminal green wire to distributor and white to ecu
NEED HELP PLEASE |
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SGKent Samba Member
Joined: October 30, 2007 Posts: 41031 Location: Citrus Heights CA (Near Sacramento)
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Posted: Wed Sep 20, 2017 3:22 pm Post subject: Re: IGNITION PROBLEM |
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you indicate that the points cause the test light to flash. Is this correct?
Where is the test light connected?
where are you testing for spark at the coil?
Is the test light removed at that time? _________________ “Most people don’t know what they’re doing, and a lot of them are really good at it.” - George Carlin |
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WESTYJACK Samba Member
Joined: February 21, 2017 Posts: 266 Location: LAVAL,QC CANADA
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Posted: Wed Sep 20, 2017 3:29 pm Post subject: Re: IGNITION PROBLEM |
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TEST LIGHT BLINKKING BETWEEN 15 AND 1 TERMINAL
AND 1 TERMINAL TO GROUND BODY
check for spark at coil with the center wire on coil and the other end near the body ground and also with the test light in the outpput of the coil and the test light clamp to ground
also the test light was blinkking when i try the coil spark with the wire near to groun |
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telford dorr Samba Member
Joined: March 11, 2009 Posts: 3547 Location: San Diego (Encinitas)
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Posted: Wed Sep 20, 2017 3:49 pm Post subject: Re: IGNITION PROBLEM |
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1) If the test light is blinking, connected from either terminal 1 to terminal 15, or terminal 1 to ground, then the points are working.
2) The coil will not produce spark voltage with a test light connected.
3) Sounds like either the condenser is bad or the coil is bad. Try replacing the condenser first - it's cheaper. _________________ '71 panel, now with FI
'Experience' is the ability to recognize a mistake when you're making it again - Franklin P. Jones
In theory, theory works in practice; in practice, it doesn't - William T. Harbaugh
When you're dead, you don't know you're dead. The pain is only felt by others.
Same thing happens when you're stupid. - Philippe Geluck
More VW electrical at http://telforddorr.com/ (available 9am to 9pm PST) |
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WESTYJACK Samba Member
Joined: February 21, 2017 Posts: 266 Location: LAVAL,QC CANADA
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Posted: Wed Sep 20, 2017 3:56 pm Post subject: Re: IGNITION PROBLEM |
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tanks for your help
gonna try the new condenser tomorrow
the coil is new(not necessary good but)
best way to check spark on coil is by keeping lead on the center and the other end near a ground somewhere then cranking`right?
after reading some info on the web if a condenser is defect maybe wrong spark or no spark at all |
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telford dorr Samba Member
Joined: March 11, 2009 Posts: 3547 Location: San Diego (Encinitas)
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Posted: Wed Sep 20, 2017 6:07 pm Post subject: Re: IGNITION PROBLEM |
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WESTYJACK wrote: |
best way to check spark on coil is by keeping lead on the center and the other end near a ground somewhere then cranking`right? |
Yes.
Quote: |
after reading some info on the web if a condenser is defect maybe wrong spark or no spark at all |
Most likely little or no spark at the HV wire, and excessive sparking at the distributor points. _________________ '71 panel, now with FI
'Experience' is the ability to recognize a mistake when you're making it again - Franklin P. Jones
In theory, theory works in practice; in practice, it doesn't - William T. Harbaugh
When you're dead, you don't know you're dead. The pain is only felt by others.
Same thing happens when you're stupid. - Philippe Geluck
More VW electrical at http://telforddorr.com/ (available 9am to 9pm PST) |
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WESTYJACK Samba Member
Joined: February 21, 2017 Posts: 266 Location: LAVAL,QC CANADA
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Posted: Wed Sep 20, 2017 7:13 pm Post subject: Re: Ignition Problem |
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thanks very much
try it and reply for sure |
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WESTYJACK Samba Member
Joined: February 21, 2017 Posts: 266 Location: LAVAL,QC CANADA
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Posted: Thu Sep 21, 2017 3:08 pm Post subject: Re: Ignition Problem |
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I guys
news from day 2
now spark from coil after replacing condensator and spar at 4 spark plug good
time for compresion test
no to good 1 cylinder was very low about 90 but in next spring i plan to rebuilt so
for now the only thing that bug me is i have to move it the other side of my house for the winter but i need engine because no towing can go there
so we goinna start that thing
next fuel
install new pump
voltage at the pump and voltage with the afm
stop major leak at the cold start valve ok repair
crank but no fire up
check for voltage at injector
yes but with test light with ground at body the 2 pin of injector light up the tester?
i think the injector are clogged very durty so gonna clean with carb cleaner and 9volt batterie and when rebuilt 4 new injector
i just frogot to check if injector are spraying before take it off anyway when cleanning i`ll see |
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SGKent Samba Member
Joined: October 30, 2007 Posts: 41031 Location: Citrus Heights CA (Near Sacramento)
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Posted: Thu Sep 21, 2017 3:12 pm Post subject: Re: Ignition Problem |
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table spoon of fresh gas in the plenum or S-boot and see if it fires up for a moment. _________________ “Most people don’t know what they’re doing, and a lot of them are really good at it.” - George Carlin |
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WESTYJACK Samba Member
Joined: February 21, 2017 Posts: 266 Location: LAVAL,QC CANADA
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Posted: Thu Sep 21, 2017 3:18 pm Post subject: Re: Ignition Problem |
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good idea
i forgot to try that
now i have 2 injector out maybe just replace them and try to see
that suppose to give me the answer for the injector |
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22manybugs Samba Member
Joined: March 30, 2006 Posts: 373 Location: Yorba Linda, Calif
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Posted: Thu Sep 21, 2017 11:23 pm Post subject: Re: Ignition Problem |
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One other item you might want to check is the battery voltage when it's loaded - such as when cranking the starter. Check battery voltage with no load, should be about 12.6 V. Then have someone turn on the starter and watch the voltage. If the voltage drops substantially, the battery is weak. A test light can still turn on with low voltage, but there's not enough power to crank the starter plus hot enough spark to start. _________________ Lon
1969 Karmann Ghia convertible
1971 Westfalia camper |
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WESTYJACK Samba Member
Joined: February 21, 2017 Posts: 266 Location: LAVAL,QC CANADA
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Posted: Fri Sep 22, 2017 4:57 am Post subject: Re: Ignition Problem |
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tanks for the input
batterie is new and always connect to my garage charger
after more look at the injector very very durty i`m gonna clean trhem and try it in a cup with the harness of the bus
if it`s spray
now i have spark -gas-compression(maybe not at top) but at this moment it is suppose to start
run roughfly maybe no idle maybe but start |
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WESTYJACK Samba Member
Joined: February 21, 2017 Posts: 266 Location: LAVAL,QC CANADA
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Posted: Fri Sep 22, 2017 6:12 pm Post subject: Re: Ignition Problem |
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day no 3
all 4 injector are clean with good spray patern
next install on rail and test before bolting in all 4 gonna spray in plactic bag
cold start valve stuck work on it tomorrow
new rubber hose and seal for injector ans rail
all 4 injector pass a night in a bath of alcool and next morning pressurize with car cleaner an 9 volt batterie and return in bath for couple hours all works nice |
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