Fixing Rough Idle 1977 Ford F250 351m with Duraspark 2 II System
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- Опубликовано: 26 авг 2024
- This was a super fun yet rough video for me. This truck had fought hard to stay running but thank the Lord I got it going. in the video I never stated what made it run better. After rewatching I think it was a mix of things. The first thing being the carburetor having some dirt in it or some sort of blockage. The second seemed to me like fouled spark plugs, those plugs really got some serious carbon on them probably from me adjusting the carb around so much I'm sure at least one was fouled.
Anyhow I hope this video helps someone out!
May The Lord Jesus Bless Ya!!!
My Links: linktr.ee/tyle...
Check Out My Duraspark 2 Troubleshooting Video!
• My in Depth Duraspark ...
My 1977 F250 Playlist: • My 1977 Ford F250
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(eBay Affiliate Links)
Duraspark II Module: ebay.us/GOMxog
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| Check Distributor Drive Gear & Camshaft Materials i.e. Cast Or Machined / Engine Type, Generation, Displacement |
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Multimeters: ebay.us/OyEuoG
I’m old and I think you did a great job I think it’s awesome younger guys working on old trucks is awesome too keep on keeping on!
Hey can you take some pictures on the vacuum roughting with the air cleaner off if you still have the truck after 2 years lol
Thanks! Sadly I ended up taking all the vacuum stuff off.
@@TylerCreates not sad it’s good can you take a picture of what you did as far as capping and plugging
great job, the vacuum lines are needing a video itself...no one has done that one yet... thanks
The roooster wants his truck back🤣🤣🤣
if you ever have too feather the gas when you use the brakes its the carb for sure..mine the throtle plate was worn and a loss of vacume made it stall out when i pressed the brake..change it to a new carb and nothing else i no longer had to press the gas when i used the brakes....my engine sitting in my kitchen lol
I've been dealing with the same issues. However I haven't figured it out yet. I've checked and replaced pretty much every part you can name on it. And I've had the timing set as well.
Something I've learned about what reading you should get from your manifold vacuum is that it's dependent on your elevation and your engines camshaft. My stock 351w at about 4800-4900ft above sea level, I read a little above 15 inches of mercury. If I were at or closer to sea level I should be closer to 20. Again this is with a stock cam as that also contributes to your manifold vacuum rating.
This is fantastic video
Awesome video
I need pics of your vacuum line routing!
Me tooo please
I got an 83 with a rough idle but trouble starting also. Should I start with changing the old gas out? It’s been sitting a year without running. I t wasn’t getting fuel to the carb at first and I put a new pump and it’s getting fuel to the carb now but only starts when I put fresh gas directly in the carb and starts running rough like a misfire
Before it sat it ran beautifully
I would say gas would be a good start, also check over your main electrical components / connections and make sure nothing has corrosion from sitting.
Man, I'm fighting this battle right now and I appreciate the info! I'm working on it from the vacuum leak angle. Do you have any tips for what size vacuum hoses I should buy. Mine is a 1979 2 barrel 302. Thhere is an small diameter hose that comes out of the front of the carb and connects to a piece called a TVV or a vacuum delay valve, I've heard both, and then it gets larger on the other side. Of course one of the barbs of that valve broke off and it's not going well looking for a replacement. If I had the vacuum hose sizes before and after it and replaced those, would it be the end of the world if I found a connector and just omitted that valve.
Hello, it really depends on where the vacuum delay valve is going. I have one that goes to a bean can I kept for nostalgia but they are really not needed as all that stuff is either broken or pointless to begin with. I took most of my vacuum stuff off the motor as its so old it can not be trusted when it comes to internal vacuum leaks or cracked hose which causes poor engine running and efficiency.
Easy a vac hose check
Check your float on your calculator
Great video. I have a weird issue I'm dealing with any advice would be appreciated. 351M ina 78 custom.
If it does start it will only run for a couple seconds, I have fuel and accel pump, plus I have spark. Not sure what I'm missing with this thing.
Thanks! I would have to guess that it is a loss of voltage somehow. Does the motor die when you let the key return to RUN from the CRANK position?
@@TylerCreates thanks for the reply. Actually I'm on my own so I have been leaving the key on and starting it up off the solenoid.
I did notice some weird goo under the grey box on the driver's side. Think I could be getting Intermittent spark?
Ah yeah the goo is called potting material. Ford used it to seal the duraspark box electronics. Number one issue with the duraspark system is the Potting material melting out of the box because they get way way to hot. On passenger cars people have to relocate them away from the headers because they melt out in some cases on first drives. In these trucks they can get hot but it is less likely as the box should be mounted way up by the driver side hood mount. If the there is goo the box is for sure bad as when the potting material melts the box has got real hot and then shorts out. Something I did to help the back of my box stay cool was add 3 small washers stacked on each mounting screw moving the box out away from the mounting panel about 1/4 Inch allowing some airflow behind it.
@@TylerCreates Well that makes sense. I'll start with that for sure. 1st time I have messed with this type of setup and I wasn't sure that was doing anything.
Really appreciate it.👍
@@TylerCreates yes I am having intermitting spark issues. I have changed everything else out but did not know anything about the duraspark system. I will inspect the box and get back to you.
What about to pick up in the distributor
I actually just made a video detailing the Dursparrk II System and the pick up / hall affect sensor. Its over on the channel.
I have a 1985 LTD Crown Victoria V-8 really high idle,Do you have any ideas on what is causing it?
Is it a manual or auto and does it have a factory 2 barrel carburetor. Also have you adjusted the distributor at all?
@@TylerCreates It’s Emmanuel, two barrel carburetor.
haha nice! Well the first thing I would do is make sure your choke is all the way off when the engine is fully warmed up and not set wrong or getting stuck. Also check and make sure your throttle blades / transfer slots are adjusted correctly. Check your mixture screws and make sure they are tuned correct using a vacuum gauge. Never tighten a mix screw, it ruins the carburetor, just turn it in until it stops and no more then you can work out from there in adjustments of 1/4 turns.
@@TylerCreates and it’s a coupe ✌️
Wow and im looking for a mechanic 😂