need help with trouble shooting ideas!
#1
08-08-2009, 07:06 PM
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need help with trouble shooting ideas!
ok so heres what we got.
a dead cb7 1991 with a stock f22a1 in it.
a dead cb7 1991 with a stock f22a1 in it.
- is not giving a spark of any type.
is getting fuel.
motor is cranking wont start.( timeing belts fine>)
fuel pump turns on so main relay is fine.
list of things replaced or checked.
igniter, was replaced, didnt change anything
coil was replaced, and didnt do anything
wireing up to distributor, is all good.
all other ovious test performed?????
#2
08-08-2009, 08:02 PM
Have you noticed whether CEL and Alt light are on when no-start occurs? If lights are off, the ignition switch is likely fault. Also check the blk/yel wire at the distributor connector for 12v when keyswitch is on. If voltage is missing ignition keyswitch assy is faulty.
Since you've replaced coil and ignitor, this only leaves ignition switch. I would also inspect or replace the distributor cap and rotor. A crack in these components can short the spark to ground and prevent starting.
good luck
Since you've replaced coil and ignitor, this only leaves ignition switch. I would also inspect or replace the distributor cap and rotor. A crack in these components can short the spark to ground and prevent starting.
good luck
#4
08-09-2009, 12:07 AM
Replacement of the electrical portion of the ignition switch isn't too difficult of a job. First, test! Turn the key to the II position. Check for battery voltage on the blk/yel wire that goes to the distributor or coil. If you have 12V, then the wire is ok.
Check for ECU codes. If a sensor failed in the distributor, it should set a code.
Also inspect the condition of the wiring in the distributor.
Check for ECU codes. If a sensor failed in the distributor, it should set a code.
Also inspect the condition of the wiring in the distributor.
#5
08-09-2009, 02:49 AM
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hooked up the wires at ignitor properly ?? cel on when you first turn the key on and goes off in 4-6 seconds?? distr rotor ok ??
go to the DIY section 2nd page ,,,,,,,,,,no start no spark..coil or ignitor .......follow the procedure and let us know the results..
go to the DIY section 2nd page ,,,,,,,,,,no start no spark..coil or ignitor .......follow the procedure and let us know the results..
#7
08-09-2009, 02:09 PM
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Join Date: Dec 2005
Location: In The Desert ( Sahara ? )
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possibilities of no spark:
timing belt broken ............
coil...................
ignitor..................
distributor .........
igniton switch,,,,,,,,,,,
plug wires ..........
wiring ,, loose , broken ...........
rotor + cap ..............
You have checked all of those and i mean ALL OF THOSE ,( and i do not mean just by looking at them ) but by testing them ,,and they are all ok ??? and still no spark at spark plugs ???? and no codes ???
does car have an alarm system ???
#8
08-09-2009, 03:24 PM
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hooking up the wires INCORRECTLY in the ignitor will not prevent the engine from cranking
possibilities of no spark:
timing belt broken ............ it turns, and looks fine/turns everything(checked with valve cover off test)
coil...................bought a new one. did same thing
ignitor..................bought new one same thing.
distributor .........
igniton switch,,,,,,,,,,,this works fine, and starts i no for sure this is fine.
plug wires ..........wires are new, and tried starting with old wires, both sets did the same thing
wiring ,, loose , broken ...........we have a good circut with all wireing up to dizzy
rotor + cap .............. very new still
You have checked all of those and i mean ALL OF THOSE ,( and i do not mean just by looking at them ) but by testing them ,,and they are all ok ??? and still no spark at spark plugs ???? and no codes ???
yup no spark when we tried the spark test, and no alarm.
does car have an alarm system ???
possibilities of no spark:
timing belt broken ............ it turns, and looks fine/turns everything(checked with valve cover off test)
coil...................bought a new one. did same thing
ignitor..................bought new one same thing.
distributor .........
igniton switch,,,,,,,,,,,this works fine, and starts i no for sure this is fine.
plug wires ..........wires are new, and tried starting with old wires, both sets did the same thing
wiring ,, loose , broken ...........we have a good circut with all wireing up to dizzy
rotor + cap .............. very new still
You have checked all of those and i mean ALL OF THOSE ,( and i do not mean just by looking at them ) but by testing them ,,and they are all ok ??? and still no spark at spark plugs ???? and no codes ???
yup no spark when we tried the spark test, and no alarm.
does car have an alarm system ???
u see where this is kinda getting me confiseed?
#10
08-09-2009, 05:09 PM
Been Around A Long Time Member
Join Date: Dec 2005
Location: In The Desert ( Sahara ? )
Posts: 4,754
i want you to try something for me...I know u put new parts in but chk a few things for me .
get a test lite....
put the key on and chk to make sure that you have power at the positive side of the coil
if you do.....assuming wiring going to coil is all good
hook up one lead to a good known ground and the test lite probe to the neg side of the coil,,have someone crank the engine
if the test lite pulsates you got a bad coil
if test lite does not pulsate you got a bad ignitor ..
do this and let us know the results ,,
get a test lite....
put the key on and chk to make sure that you have power at the positive side of the coil
if you do.....assuming wiring going to coil is all good
hook up one lead to a good known ground and the test lite probe to the neg side of the coil,,have someone crank the engine
if the test lite pulsates you got a bad coil
if test lite does not pulsate you got a bad ignitor ..
do this and let us know the results ,,