Come along with Eric O. at SMA as he takes a look at the glow plug system on this '99 Ford F-350 to see what is causing the hard start on this 7.3 powerstroke turbo diesel.
Interested in stuff seen in the videos or the tools and toys Eric O. likes and uses? Check out the S.M.A. "A-Store" and help support the channel! : http://astore.amazon.com/httpswwwy0837-20
If an SMA Video has helped you out please consider giving using the "support" link on our YouTube home page. The videos take real time to create and pull us away from real work that pays our bills.
THANKS!
--Eric O.
WANT AN "SMA" STICKER OF YOUR OWN!?!
Simply send and E-mail to SMAstickers @outlook.com including: your shipping address and e-mail address in the text, I in turn will send you a paypal invoice for $5 each USA or $6 each international. Let me know how many you want and as soon as the paypal invoice is paid I will ship them out ASAP! Thanks for your support of our channel!!
--Eric & Vanessa O.
Feel like sending some swag to SMA because you love the videos but don't know where to send it?
Just ship it here:
South Main Auto Repair
47 S. Main St
PO Box 471
Avoca, NY 14809
Disclaimer:
Due to factors beyond the control of South Main Auto Repair, it cannot guarantee against unauthorized modifications of this information, or improper use of this information. South Main Auto Repair assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. South Main Auto Repair recommends safe practices when working with power tools, automotive lifts, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this video. Due to factors beyond the control of South Main Auto Repair, no information contained in this video shall create any express or implied warranty or guarantee of any particular result. Any injury, damage or loss that may result from improper use of these tools, equipment, or the information contained in this video is the sole responsibility of the user and not South Main Auto Repair.
Interested in stuff seen in the videos or the tools and toys Eric O. likes and uses? Check out the S.M.A. "A-Store" and help support the channel! : http://astore.amazon.com/httpswwwy0837-20
If an SMA Video has helped you out please consider giving using the "support" link on our YouTube home page. The videos take real time to create and pull us away from real work that pays our bills.
THANKS!
--Eric O.
WANT AN "SMA" STICKER OF YOUR OWN!?!
Simply send and E-mail to SMAstickers @outlook.com including: your shipping address and e-mail address in the text, I in turn will send you a paypal invoice for $5 each USA or $6 each international. Let me know how many you want and as soon as the paypal invoice is paid I will ship them out ASAP! Thanks for your support of our channel!!
--Eric & Vanessa O.
Feel like sending some swag to SMA because you love the videos but don't know where to send it?
Just ship it here:
South Main Auto Repair
47 S. Main St
PO Box 471
Avoca, NY 14809
Disclaimer:
Due to factors beyond the control of South Main Auto Repair, it cannot guarantee against unauthorized modifications of this information, or improper use of this information. South Main Auto Repair assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. South Main Auto Repair recommends safe practices when working with power tools, automotive lifts, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this video. Due to factors beyond the control of South Main Auto Repair, no information contained in this video shall create any express or implied warranty or guarantee of any particular result. Any injury, damage or loss that may result from improper use of these tools, equipment, or the information contained in this video is the sole responsibility of the user and not South Main Auto Repair.
Hell of a lot more helpful than 7.3 groups on Facebook. They always say to replace the valve cover harness.
I thought you were going to wheel in a old oscilloscope like we used in HS auto mechanics in the 70's.
ok so put a new relay on and still no power to the far terminal. Have on the passenger side big terminal but not the driverside
Thank you
I wouldโve loved to see the cold starts
Doesnโt hurt to check the resistance of the glow plugs if you suspect theyโre not strong, i think spec on those are under 2ฮฉ resistance is good, also for folks that might be thinking that relay looks like the starter relay.. take note that the relay for the glow plugs is different than the starter relay, the ground is different on the glow plug relay on the control side, i think itโs isolated and switched through the ground side
I'm going to give it a try , but on the dashboard the light that says wait to start doesn't come on
The part that was bad was the part he was testing at the end or are the relays in the fuse area… Yes I'm and dumb ass tree guy who knows he's not a mechanic so please save the hate but love to fix what I can and shop terminology is almost foreign language to me would love an answer of any kind
if i can make one suggestion, i diagnose mine by reading the resistance and multiplying by 12 volts to figure out how mudh current is passed through each glow plug. from there, if you wanted, you could calculate power, but usually just looking for a decent current passing through is good enough. you can make continuity and pass the light test, but your resistance may still be too high and therefore passing little current and making it hardly turn on
Great one, I have a 7.3. No monkey business, you are like a dog on a bone. I wish I was in your neighborhood and Not stuck out here wacko California.
great vedeo on my 2001 excursion 7.3 a cople days ago starting a really hard to start!! and the (engine light orange color) coming! i don"t have a professional equipment for checking a problems! but on my cheaper OBD stuff detected a P0672, and P1670 when the engine is hot he starting good! but on low temperatures is really hard to start!!! anyone knows what caind of the problem is? i apreciate ALL helps thanks fellas cheers from norway
Thank you! Came across this video and I'm going to test my truck once I get my hands on that price.
I recently purchased a 99 f250 with the 7.3L and its been hard getting it to start. Takes a few primes and cranks. So I'm trying to find the cheaper repairs that can be done first, before assuming glow plugs or fuel injectors… hope this solves my issue
I worked on controls throughout my career (retired now) and it was hard to convince others that without a system it might be a waste of time.
Nice video thank you for taking the time. God bless you ๐
7.3 idi he said was 6 volts is wrong its 9 volts ZD9 glow plugs is what i use stock
Not trying to be that guy, but that doesnโt necessarily mean the glow plugs are good. The light will light up even if the glow plugs are bad because anything you touch that is grounded will cause the light to come on the scope. I have had this issue. It seems like every few months during the cold time of year Iโm constantly changing the relay which leads me to believe I have one or more glow plugs bad.
I may have the last of the 99s because the dealer said my order probably wouldn't go through when I contracted it new. It's hauled hundreds of tons over the years. The hard start and check engine light came on recently. After South Main's instructions led me to solve my cold start problem in two hours and for the $57 cost of an O'Reilly replacement relay, I watched his video again, and this time sat through all the commercials thrown up first, to give him some more YouTube revenue. Gotta check the merch, too. What would the dealer repair dept. have cost for this??!!
OK!!
Eric ive been working on my truck and my dads truck both with over 400k on them and never thought to check the glow plug relay until i saw this video tonight almost 4 years after you posted it and i went right out at 10 pm and made my son turn my truck on and off and lo and behold my relay is bad thank you so much for making this video.
Is this the big 6.0 or big 7.3 ?
Get a 6.0, and you'll never have that shit. 7.3s are cold blooded
I donโt understand or dislikes itโs nothing but excellent knowledge thank you for your time,!! Eric your wicked good๐๐๐๐๐๐
In small town USA, a mechanic has to know a lot about diagnostics. Eric's videos have shown that he know a lot more than even the local car dealership mechanics.
I have a question for you my friend that is off topic of your video however I would greatly appreciate a reply the issue that I'm having is I have a 02 F-350 with a 7.3 L diesel the heads were cracked and they also did not have a fuel return line from the factory as far as I could tell now that donor heads were out of a 96 model 7.3 it was set up with a fuel return limes since mine did not have a fuel return I just used a plug and plugged the return off would this cause me to have issues with the engine or performance issues
I love that truck, i have a white 99 just like it. Good truck. You make it look easy to work on. Thanks or the video.
Eric can you do this same test but go further say that it was not relay but a command problem and how you would start .I've got a 02 7.3 that not getting control to ground post for glow plug and I'm not able to get anything for a diagram .also where do you get your diagrams so I may get mine from reliable source thanks Jim
Hey friend. I changed that cylonoid still takes about 7 seconds to start. I checked the ground to the new glow plugs, its good. But when I check the wire harness from the value cover up, nothing lit up.
I would think just checking to see if a glow plug was grounded doesn't prove it working. Ford diesel owner with glow plug experience.
Enjoy your videos every day.
My 7.3 starts easily down to about 10 degrees without being plugged in.
It starts when it's hot.
Between 45-50 degrees is when it doesn't like to fire up.
Thanks and much appreciated.
Great vid thank you
You should have checked resistance of each glow plug. Seeing them show getting power is good. But if the resistance is out of spec, they need to be changed
Any tips on changing the glow plugs on a 2001 7.3 L, especially the passenger side I have to remove looks like a bunch of belts the alternator some intake hoses for a start..! I would really like to see a video made of that ๐
Great diagnostic tips thanks a bunch.
Straight to the point, A true professional. same problem on my old work horse, thanks!!
Thanks this is a good starting point. I will try this first.
What the hell was that noise when Hannah kept turning the truck to RUN
Very well put together video very well explained easy to understand thank you for you intelligence ๐
What kind of test is that! The plug could be shorted and the light would still go on. You need to check the ohms to ground. Get a wiring diagram and you will know what the second wire goes to. Got to love you would be back yard would be mechanics.
Awesome, thanks buddy.
Some brake clean would have taken care of those crusty terminals.
too bad the relay he was testing was actually for the grid heater…not the glow plugs… fail
Excellent guidance. Exactly the problem I was having and the exact solution to fix the problem. Thanks
Take the pos relay and toss it in the trash get a WHITE RODGERS 586-902 rely and you never have to replace it again. Mines been on more than 8 years. Never an issue it a lot bigger so you'll have to fidget with it but it will fit. You really need to ohm the glow plugs a test light will show yeah or ney. Ohming will tell you if there worn out. Good video for a quick how to
When you say open circuit does that mean a wire came off the top of the glow plug? It wont light up if its not connected to the glow plug correct?
"Scope on a rope" . . . Funny!
Cant find a plug in on my 93 7.3 do all have them?
That extra wire is for the fuel bowl heater if i remember correctly.
good one
๐ ๐
Easy fix.
Ever seen the AC clutch stuck on during cranking? AC works fine otherwise.