2010 Ford Edge 3.5L P0303 Misfire Diagnostic! - The Power Of Relative Compression Testing!
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- Опубліковано 14 жов 2024
- This pesky P0303 misfire DTC keeps coming back. Why haven’t any of these cheap eBay parts fixed this misfire condition? Sometimes scan data just isn’t enough, let’s bust out the scope and dig deeper! Our customer has already replaced the spark plugs, coils, and injectors themselves.. Did they get bad new parts out of the box? Are we dealing with an electrical or mechanical issue? let’s find out!
We found main issue, RC test for the win! But what's the next step? What now? I'll be making another video, showing how to use the data we gathered. And apply it to further pinpoint the root cause of this pesky misfire, so be on the lookout for Part 2!
#uScope
#Hantek1008c
#Relativecompression
Sounds like wrenching with Kenny change the coils and get the eBay cheap ones change the injectors and get the eBay cheap ones. I’m convinced that they are their own worst enemy. Buy the OEM stuff you’ll spend the money once and it won’t bite your ass later. Dang it one minute into the video I already know where this is going!
Great video
Did you run an old fashion compression test? If not. Why?
No I did not. Because it would have been redundant. Just not necessary at this point. The client isn’t interested in any major repairs at this time. I may film a part 2 if they decide they want me to further pinpoint the issue. But a traditional compression test is becoming a thing of the past. There are more effective ways to see what’s going on in that engine.
real oem parts are expensive but well worth it.
Definitely! Parts are a crapshoot these days unfortunately. I am using more and more OE parts these days. I didn't used to see such a high aftermarket parts failure ratio. Nothing worse than chasing bad new part issues!
What about a single cylinder?
What is the question? Sorry not following.
@@BigDogDiagnostics sorry i mean how can I test the integrity of a single cylinder scooter if it's mechanical and timing good perhaps with a vacuum gauge ?
@@geoepi321975 you can either use a mechanical gauge to get the compression and you can also perform a leak down test if you have that tool. Scope wise the best way to test for mechanical integrity would be to use an in-cylinder pressure transducer.
@@geoepi321975 but if you don’t have another cylinder to compare an RC test too it doesn’t matter.