only two coil without sparks, the car no start
03-30-2009, 11:16 PM
#1
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Join Date: Dec 2008
Posts: 43
only two coil without sparks, the car no start
well thats my story,
i have a maxima 96, so it started to make explosions without reason,
one day it make one of those and the cylinder #3 stop getting spark,
the same day i arrive to my house, parquet my car and go to sleep.
the next morning the car didn't start.
i check the coils:
the number one have full spark
the number two none at all
the number three none at all
the number four to the six have spark normally
I've tested the cranks, the cam, the computer,
the coils condenser, the knock sensor,
changed the spark plugs, revised the gasket of the manifold an changed it all three,
clean all vacuums and others related to intake and air to the engine.
I've added the extra grounds.
bros i m getting mad because i have 1 moth trying to start my car and none.
many experts come to see my car and they give up.
the car try to start but seem like there is some thing preventing the start.
the car have the codes 0304, 0803 and 0401 none of them prevent the car to start.
the coils have been tested on other line on the same car and they have spark, so its not coil related.
I've tested the pulse of the coils from the ECU and there are continuity.
please help. i m from Santo Domingo, sorry for my bad English
i have a maxima 96, so it started to make explosions without reason,
one day it make one of those and the cylinder #3 stop getting spark,
the same day i arrive to my house, parquet my car and go to sleep.
the next morning the car didn't start.
i check the coils:
the number one have full spark
the number two none at all
the number three none at all
the number four to the six have spark normally
I've tested the cranks, the cam, the computer,
the coils condenser, the knock sensor,
changed the spark plugs, revised the gasket of the manifold an changed it all three,
clean all vacuums and others related to intake and air to the engine.
I've added the extra grounds.
bros i m getting mad because i have 1 moth trying to start my car and none.
many experts come to see my car and they give up.
the car try to start but seem like there is some thing preventing the start.
the car have the codes 0304, 0803 and 0401 none of them prevent the car to start.
the coils have been tested on other line on the same car and they have spark, so its not coil related.
I've tested the pulse of the coils from the ECU and there are continuity.
please help. i m from Santo Domingo, sorry for my bad English
, and Ai would like to know how can I check if coils and crank position are good ???
03-31-2009, 07:08 AM
#5
You post whored for this?
If you search, cylinders 2 and 3 not firing is indicative of the timing chain being off a tooth.
That or the wiring or coil drivers in the ECU could be faulty. Tried a new ECU?
Do any timing work before this happened?
If you search, cylinders 2 and 3 not firing is indicative of the timing chain being off a tooth.
That or the wiring or coil drivers in the ECU could be faulty. Tried a new ECU?
Do any timing work before this happened?
03-31-2009, 07:09 AM
#6
03-31-2009, 07:51 AM
#7
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Thread Starter
Join Date: Dec 2008
Posts: 43
pmohr
thank you for you response.
yes, a timing work was done before,
my car broke all the intake valves well good in Spanish
mi carro doblo todas las valvulas de admission
due to a bad mechanic work done on the pulleys, so the guy forget to put the tooth on the pulley and the car bend all the admission valves.
so later on we manage to get the car working fine, but some day the explained above happened.
i had to check it out. thans bro,
how could i check if it's a missed tooth to be sure before the big work
thank you for you response.
yes, a timing work was done before,
my car broke all the intake valves well good in Spanish
mi carro doblo todas las valvulas de admission
due to a bad mechanic work done on the pulleys, so the guy forget to put the tooth on the pulley and the car bend all the admission valves.
so later on we manage to get the car working fine, but some day the explained above happened.
i had to check it out. thans bro,
how could i check if it's a missed tooth to be sure before the big work
03-31-2009, 05:40 PM
#8
pmohr
thank you for you response.
yes, a timing work was done before,
my car broke all the intake valves well good in Spanish
mi carro doblo todas las valvulas de admission
due to a bad mechanic work done on the pulleys, so the guy forget to put the tooth on the pulley and the car bend all the admission valves.
so later on we manage to get the car working fine, but some day the explained above happened.
i had to check it out. thans bro,
how could i check if it's a missed tooth to be sure before the big work
thank you for you response.
yes, a timing work was done before,
my car broke all the intake valves well good in Spanish
mi carro doblo todas las valvulas de admission
due to a bad mechanic work done on the pulleys, so the guy forget to put the tooth on the pulley and the car bend all the admission valves.
so later on we manage to get the car working fine, but some day the explained above happened.
i had to check it out. thans bro,
how could i check if it's a missed tooth to be sure before the big work
How long between the work and this happening?
Delete your duplicate thread, you don't need multiple threads for the same issue, just ONE.
The only real way to find out for sure is to take off the front cover and count the chain links between the marks on the outer cam gears.
If you just had this work done, why wouldn't you take it back to your mechanic?
03-31-2009, 09:50 PM
#10
Especially by a mechanic that himself caused all of the bent valves.
I'd do compression/leakdown testing, followed by putting the engine at TDC and checking the cams to be sure they were in the right position. Though at a likely 1 tooth off, it probably won't be immediately apparent.
http://www.asashop.org/autoinc/jan2001/techtips.htm
Did he use a new tensioner? He should've installed the updated tensioner and guide while he had the front cover off.
If the tensioner allowed the chain to skip, it could cause this exact problem.
I'm going with the timing chain on the blind assumption that you did indeed test the coil signal from the ECU, and you did interpret the readings correctly. I would try another ECU before checking the chain, but you may not have one on hand.
03-31-2009, 10:10 PM
#11
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Join Date: Dec 2008
Posts: 43
yeap i did test the coil signals from the ecu, i tested another brand new ecu, the car didnt start, but you've throw some light here , the tensioner wasn't changed, so this could be the problem, the damn car try to start, and he want, but he could'nt.
here are a lot of ecu and engines, but not well versed mechanic in the area of the nissan, so nissan is not like honda and toyota. the coomons cars here in R.D
here are a lot of ecu and engines, but not well versed mechanic in the area of the nissan, so nissan is not like honda and toyota. the coomons cars here in R.D
03-31-2009, 10:45 PM
#14
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Join Date: Dec 2008
Posts: 43
thats whats the forums are for. here in Dominican Republic no one know how to solve this.
i got the solution in less than 24 hours.
pmohr how much did i owe you ?
i think this link http://www.asashop.org/autoinc/jan2001/techtips.htm should be sticky, i have more than 15 days reading the posts
i got the solution in less than 24 hours.
pmohr how much did i owe you ?
i think this link http://www.asashop.org/autoinc/jan2001/techtips.htm should be sticky, i have more than 15 days reading the posts
Last edited by carlostelevida; 03-31-2009 at 10:48 PM.
03-31-2009, 11:44 PM
#15
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Join Date: Dec 2008
Posts: 43
cited:
" When I asked the technician to check the engine mechanical cam timing, he found the timing chain was off one tooth. He corrected the cam timing and the two coils started firing once again."
from the page you referred.
so i ask
how could i correct the cam timing?
taking the timing chain off and mounting it in the right position.
or there's any other easier way?
" When I asked the technician to check the engine mechanical cam timing, he found the timing chain was off one tooth. He corrected the cam timing and the two coils started firing once again."
from the page you referred.
so i ask
how could i correct the cam timing?
taking the timing chain off and mounting it in the right position.
or there's any other easier way?
04-01-2009, 09:01 PM
#18
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Join Date: Dec 2008
Posts: 43
for every body to know, what cause the missed tooth in my engine was the gear from the crank shaft appear to have game where the nail joint goes was damaged and this lead to the failure. tomorrow some picks of the damaged Gear, its the one who moves is moved by the chain and therefore moves the main shaft.
04-01-2009, 09:09 PM
#19
for every body to know, what cause the missed tooth in my engine was the gear from the crank shaft appear to have game where the nail joint goes was damaged and this lead to the failure. tomorrow some picks of the damaged Gear, its the one who moves is moved by the chain and therefore moves the main shaft.
' the gear from the crank shaft appear to have play where the nail joint goes was damaged '
Ah, probably the woodruff key?
04-03-2009, 04:00 PM
#22
Basically:
My spanish is rather rusty, but that's what I get from it.
Well, in good spanish, the cause of the problem was that the crank key (I know uña as nail, but they might use it for 'key' where he is) got loose and let the chain skip a tooth, because the piston(gear, maybe?) of the crank has wear in the area of the key.
Last edited by pmohr; 04-03-2009 at 04:04 PM.
04-04-2009, 06:23 PM
#23
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Posts: 43
yeap that's what exactly happened, the thing is fixed, the car start but it doesn't have spark on the same 3 coils like before,
no spark from coil 1 , 2 and 3, the car manage to start bu you know how annoying is to drive a car of six pistons with only 3 pistons working. i'm still looking for the problem, any sugestion.
no spark from coil 1 , 2 and 3, the car manage to start bu you know how annoying is to drive a car of six pistons with only 3 pistons working. i'm still looking for the problem, any sugestion.
04-04-2009, 08:09 PM
#24
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Join Date: Dec 2008
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I've tested there's spark on all the coils when the car is on, but i notice that the piston seem to not work, could this problem be a valves issue . ?
help please, and thank you pmohr for all you effort helping me to solve this.
help please, and thank you pmohr for all you effort helping me to solve this.
04-05-2009, 09:07 AM
#26
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Join Date: Dec 2008
Posts: 43
i think there's a compression problem, i'm almost sure, because there's spark, but the engine sound like if there not enough spark to burn all the fuel, so this happen when there's no compresion enough on the piston to explode all the fuel properly with the spark.
i'll do a compresion test tomorrou and post the results.
thanks maxpeed96plat
i'll do a compresion test tomorrou and post the results.
thanks maxpeed96plat
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