Nissan Repair Questions? Ask a Mechanic for Answers ASAP
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Do you know if you have any codes?
I have a OBD reader and it reads no codes every time.
You have spark you say, correct?
I tested and observed a spark on cylinder 1
what about the other cylinders?
didn't try the rest. I figured spark on one was good enough
The truck doesn't even stumble or sputter when it doesn't start
it just cranks and cranks with no kicks
I would check more than one, maybe 2 or 3, then I would say yeah.
i can do that. how does this service work? do I just keep this thread open until the problem is solved?
I can keep this open till your satisfied
right. is there anything else I can check while I'm out there? Its raining and I want to keep the trips to a minimum
1 second please,
Do you happen to have starting fluid?
like for BBQs?
No for the car...
or a can of Carb cleaner?>
I do have a can of carb cleaner, but the PF is injected. does that matter?
Yes, well this is what I would like you to do
Pull the fuel pump fuse
and try using the carb cleaner if you can to start the truck
where does the carb cleaner spray into?
It may be flooded, so try turning it over a few times with the fuse out before you use it
The truck has fuel injectio
What you want to do is spray the carb cleaner after the MAF sensor
I know it is
disconnect from the MAF, spray while cranking or before I crank?
But another thought I have is the MAF sensor could be one of your problems
i tried tapping the MAF no go.
I've dealt with those before and those are usually rough idle more than no start.
If you have a straw, just slip that in to the intake duct
These MAF sensors can cause no start issues if bad
so spray while I crank or before i crank?
They can cause all sorts of issues. No starts are the hardest ones to figure out.
would the MAF send a code?
You want to have someone crack it for you while you spray to see if you get any type of running
Most of the time it doesn't
ok I'll try this all out. be back in 20
MAF sensors can fall out of spec which can off set the mixture and not allow it to run
I will wait to hear back from you
you had spark on that one wire..
Talk to you in a few
hey i'm back
no bones. got spark on 5 of 6 cylinders
tried the carb clean, no kicks
I'm worried that its some silly thing like ignition switch or ECM fried
I have fuel, I have spark, its like the injectors won't open. what do you do about that?
not sure if there's an immobilizer or how that would work.
99 I don't think has a chip in the key which would act up the Immobilizer
You have a round key not a square key right?
Sad thing is I have a shop manual in front of me and still can't figure this out. I'm going over the starting system schematics and trying to find what would block the injectors from opening
Do you have a noid light or something?
Maybe a screw driver to put to the injector to see if they click?
what is a noid light?
when turning over the engine
I have the original square PF keys
A noid light is used to check injector pulse
You have the square key
Turn the key to the ON position and tell me if the security light is solid
a noid light is like a timing light?
No, this is what a noid light is.
You unplug a injector and plug it in and it blinks to let you know your getting injector pulse
Just quickly go out to the truck and turn the key to the ON position, not starting it, and see if the security light turns on solid or turns off.
Let me know that.
security light flashes up until I go to ON or START
then it turns off
Ok, so then it's not the security system
There is only one other thing that can keep the injectors from pulsing
That would be the distributor.
The distributor sends two signals to the computer. Then the computer controls the injector pulse
But lets just do this
Take a flat head screw driver and place the blade of the screw driver on one of the injectors, and put the handle to your ear, and have someone turn over the engine and listen for them to tick
checked. I heard a pretty audible click once every second or so
during a crank
Ok, so that is good
is there such thing as 'quality' of spark? Should a spark be of a certain strength? when I checked spark some where small and blue and some where big and orange
I was going to have you pull a plug and see if it's wet
but if it's raining, maybe we can try that tomorrow
might just be where I held the screw driver.
Spark should have a nice snap to it
I can pull a plug out easy enough. checking for fuel?
Yeah see if it's flooded
plug is wet. smells like gas and carb cleaner
so the fuel system is ok, then its spark?
Lets wait till tomorrow and remove all the plugs, and pull the fuel pump fuse and crank the engine and try to dry out the cylinders
and dry out the plugs
ok, I can get to all but the back two plugs
What kind of spark plugs are in this engine? Also how many miles on it
You can leave number 6 in. That one is a pain
But pull the other 5 out
ngk iridium, maybe 4 years on those plugs
The reason I am asking cause if your pulling them and they have mileage on them, then maybe change them
I should change out those things anyways. am I getting quality of spark?
what would be bad spark?
Hard to say with out seeing it
It should be a nice snap
how do I get you back tomorrow?
Just log back into JustAnswer and go to my questions and come back to this question
Yeah, I am normally online in the evenings around 6pm till 10 or 11 pm
ok. lets start up again tomorrow.
You got it
Talk to you tomorrow
thanks. I work and will be home 6pm PST
Your welcome, talk to you tomorrow
Jay are you online?
Sorry I missed you. I am normally online in the evenings around 6 or 7 EST till 10 or 11 pm. I will continue to assist you then. Thanks Jay!
I will be online most of the day if you care to work on this issue
I have been waiting to catch up with you to continue to assist you.
Never heard back from you.
Let me know if you need further assistance on this. Thanks Jay!