theonejm15: Need help truck won't start no spark, no fuel, my dash doesn't light up a
can't hear pump come on and I hook up OBDII for codes it said no link help
thomas cochran: If u have no cam signal how do u have spark then? or do i have that
aleon1018: If the timing chain is broken, wouldn't you lose all oil pump pressure? So,
then there's also the oil pump drive where the distributor used to be to
check for movement. I have a 1999 I'm buying and the engine runs poorly and
there is what sounds like valve popping under load. One cylinder
compression was 150, while other were lower and the lowest @ 90. So, it
still runs but not well enough to drive very far. If this chain broke could
it ruin the valves and pistons? Do these cams wear out enough to also cause
Walter Wyatt: I change my ignition switch the car starts up then dies out what's the
steve payne: I changed my ignition switch truck starts and dies ? wont stay running
anybody got an answer
ScannerDanner: my point is the owner was driving it when this happened then he cranked the
Crap out of it before bringing it to me. Any additional cranking that i am
doing is no longer a concern. research would need to be done if this is a
valve bender or not before doing the chain
ScannerDanner: yes! I need to do more of that kind of testing. I think it was a valid test
that quickly identified a mechanical problem. Sorry not I think, but I
know, it was a good test. What I don't know are the all the variables yet.
sivaraj palanisamy: Thanks, i got it why, starter try to turn crankshaft so it have to put some
pressure to turn, but valve might be stuck open or closed because CAM is
not moving , this results the waveform. I feel shame to be your subscriber
asking such stupid question being your follower for so long.
Mike Bramel: Got rid of the PV350 and went with the pico transducer?
prmayner: Now i have a good excuse as to why my ring isn't on, just kiddin. I wore my
ring for many years and had several close calls, I had a high school ring
taken off my finger by a Volkswagon beetle, I had my hand down inside a
fender and when i pulled my hand out no more ring. That got me thinking.
anyway I'm still married 27 years but i don't wear my ring, it's just a
personal preference besides my wife takes hers off all the time. I guess
that's a girl thing.
kenyanr1: Let's pretend that plug wire wasn't broken.. Can you please explain how you
would've tested the plug for spark and also how you grounded the test
antiekeradio: Is it just me or did the cam sensor give a few "sort of squarewave" signals
during the first few revolutions of the crank attempt at 18:26 in the
video?? The starter also struggled badly. I got the impression the camshaft
may have moved for a bit there.
ScannerDanner: watch part II, I just uploaded it.
Wallace Rose: Love it. I turned off HBO to watch this. Thanks!
j. Huff: HAHA, this is an LN2 2.2 known as the "GM 122." It replaced the "Iron Duke"
of the 80's. It's not some super compression 427, 454 monster motor with
dished pistons. It's not an interference motor, i.e. the valves don't move
into the "piston space" throughout the 4 stroke process.
JOSE RODRIGUEZ: EXCELLANT DIAGNOSIS , PAUL
TrueBlueEG8: On the subject of the crank signal, who divides 360 by 7, would it not be
more sensible to divide by 8?
estrelladelnorte1308: nice very nice video !
ScannerDanner: yes broken chain, part 2 I will use an alternate method to ID this
condition. I'll get it up in a day or two.
ScannerDanner: if it is a valve bender. damage was done before we ever got the vehicle
TrueBlueEG8: Ah I see, thank you for your reply. and your excellent and informative
contagiousFX: If you know it's a compression problem and it's timing related, isn't it a
bad idea to keep cranking the vehicle?
Tim R: I had a little Suzuki swift come in a while back for a no start, It had
good compression, spark and fuel pressure but still would not start...
After testing all three things I automatically go to timing and it turned
out the belt had jumped a couple teeth. Great job on the video as always.
Antegas Hindoyan: Thank you very much again Paul.
foxholewilly: You're an honorable man, Paul. I, too, wore a ring that my uncle took off
of his finger and put onto mine at my mother's funeral. For nine years it
never left my finger - untill one day, when I was rewiring a solar battery
bank on a traffic message sign, that ring touched ground as my wrench was
on the positive terminal. The band got so hot, so fast, it melted the
setting of the diamond before I could pull away. I had the ring fixed and
wear it still, but with a wrap of tape when working.
Eric Holzman: you probably already found this out but the schrader valve is on the fuel
rail towards the back of the engine. flex fuel s10's from 2000+ were made
like that but the non flex fuel types had schraders on the fuel rail coming
down to that connection you were thinking of T'ing a gauge into
Travisfromoregon: Once you train to hear what a engine sounds like when cranking, you'll
start walking thur the parking lot, hearing a car start and go compression
Antegas Hindoyan: The conclusion of your test is that timing belt or timing chain is
broken??? As usual your vid are excellent. Thank very much again. Please,
don't delay part 2-
ScannerDanner: man, that isn't a stupid question at all. I had to brain storm with my
friend about it too. In this case we have one cylinder with the valves
closed all the time.
Omar Abdel: danner I wish if I could be like you,ur the best
nicky2nv: Good work on sorting ONE of the issues :P Didn't you say earlier in the
video that even if there is no chain ( missing / broken ), that the timing
CAN still be relative?
ScannerDanner: thanks man, so you understand what I mean then. I know I am taking a chance
but what this ring represents is sacred to me. I just felt the need to let
my "students" know of the dangers.
prmayner: You tell'em scanner.
ScannerDanner: no I still have it. I just like my WPS500 more. It is cleaner and gives
ScannerDanner: It has 6 evenly spaced notches and the 7th is a sync notch. It isn't being
divided by 7.
ScannerDanner: yes, it would have been from intake valves that were stuck open during
cranking. causing psi increases in the manifold.
sivaraj palanisamy: hi, if cam is not moving i am not sure how did we see a bump or hump in the
wave form on starter amp testing .. please any idea.
ScannerDanner: I think it did too. Also the struggle of the starter you heard in some of
the clips was caused by a decent amount of fuel inside of the #2 cylinder.
I found this out the hard way during initial testing of the #2 cylinder. In
fact I got a face full of gasoline. It wasn't fun.
Bill Arnold: sorry jumped into the reply to soon didnt see that someone had been
cranking over already,I could tell that engine just didnt sound right when
cranking.dont seem possible that the timing could be on time with a broken
chain maybe loose chain,but these newer generation engines and computers
not easy fixes,thats why we need techs like you .
Malisa Krzanovic: great video.....waiting for part 2 :)
John Doe: ur the best i've seen so far on you tube..no one xplain it like you
Mark1944089: Prays GOD for Skills.
Dave McNeil: I resisted wearing a wedding ring for a long time until, for an anniversary
gift, I gave my wife a ring to give to me to wear. It wasn't long before I
had a close call. I caught it on a tailgate and it was only luck that
prevented a gruesome injury. So I began putting the ring on my keyring when
I worked. It was always on me, always had the same significance, but it was
no longer able to hurt me. Electricity isn't the only hazard: Google
"finger avulsion". By the way, your channel rocks!
Bill Arnold: your lucky if that was an interference engine you would have done major
damage to the pistons and valves.
Jahan Zeb: Good enough. Nice testing. This will be even good if the second part will
come soon, meaning to say not to wait for a week or two! Thanks.
Joel N: very nice informative video Paul. Thank you
contagiousFX: That's my question, how do you know if it's not gonna bend the valves?
Jingles s: Hey scanner Danner I have run across this code p1621 one time in my career
on this same vehicle and it was self induced. This truck was a manual so i
shut it off and keep it in gear to open the overhead. The point is when i
restarted the truck I did it fast to let the heat stay in the building and
so i released the clutch before i gave this truck much time and the truck
chugged and ran like crap for ten feet till it died then i had the code
come on. i cleared it and never had an issue.
hddm3: thanks paul