USING A LEAKDOWN TESTER TO FIND LEAKING INTAKE VALVE #SHORTS

In this short video, I show you how I used my snap-on leak down tester to find a leaking intake valve and bad valve seat on a cylinder head from a 2002 Ford F150 Lightning 5.4l V8 engine.
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Disclaimer:
Due to factors beyond the control of Advanced Level Auto, I cannot guarantee against improper use or unauthorized modifications of this information. Advanced Level Auto assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. Use this information at your own risk. Advanced Level Auto recommends safe practices when working on vehicles and or with tools seen or implied in this video. Due to factors beyond the control of Advanced Level Auto, no information contained in this video shall create any expressed 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 from the information contained in this video is the sole responsibility of the user and not Advanced Level Auto.

[brianmcpherson]

Tools needed: 1 leak down tester, 5 pots of coffee.

[stevenlatham]

I wish you would release another full length video, 25-30 minutes 😢 you are one of the top YouTube Mechanics.

[JorgeHernandez-lumi]

Quick old school tip. Find the sick pot, set to TDC compression, screw tester hose into spark plug hose and pump 120 PSI into it. Hiss through throttle body, bad intake valve. Hiss through oil cap, bad rings/piston. Bubbles in coolant, pull head and check for bad head gasket, cracked head or block. None of the above or hiss through tail pipe, bad exhaust valve.

[pontiacsrule]

This guy is great taking the time in his busy schedule to make short informative videos. They are always to the point.

[sheeshalready]

You are doing a great job at making informative and entertaining real world car repair videos. Like ETCG, and Eric O, scanner danner, pine hollow, etc, keep at it with constant content and your channel will keep growing.

[Mode]

AWESOME VID MAN! To the point. Thank you!

[tihspidtherekciltilc]

For anyone that may not know, the reason you remove tools from the crank pulley and other pulleys is that the engine can just spin over quickly and hit someone with whatever tool is on a pulley. Don't ask how I know.

[Sevalecan]

I just diagnosed this problem on an engine I built (my first one, a 5.9 magnum out of a 2000 dodge ram) before checking a procedure on this. Good to verify that my procedure was correct, I have chased this problem ever since getting the engine running. I should have checked the valve seals before putting the engine in the vehicle, oh well. Gotta pull the heads off and take them to the machine shop. It's less fun working on the engine in the vehicle than out.

For my tool, I just had a compression tester, similar type of hose into the spark plug hole, remove the schrader valve first, and then I used my shop air regulated to 40PSI, have no flow gauge like with your snapon tool, BUT there is significant air coming out of the intake valve, and my understanding is I should not be able to feel much if any leaking out of there. The valve seals should be nearly perfect on a new cylinder head / set of valves, right? (This was a new preassembled EngineQuest head, I'm guessing they have poor QC)

[kennysherrill]

Very good, having worked in the automotive industry off an on for 45 years this is right on the money!👍👍👍👍👍❤🇺🇸

[Rush]

You have all the things that make the job so much quicker for the tech.

[richardgalarza]

Was it necessary to remove intake manifold, cylinder heads, etc to verify leakage from intake valves? If the leakage is coming from the exhaust valve, you would noise or hissing from the exhaust system, intake valve leakage, you would hear noise or air hissing from throttle body or piston rings, you would hear noise or hissing from oil filler cap area.

[mikem]

such good videos, even in the short format. Very easy to watch

[jamram]

That’s because it was a Jasper engine…😆

[MadSceintist]

Leaking intake valve?
Someone nicked that valve installing a thread kit. I seen it multiple times.
When anyone installs a thread repair, you have to absolutely make sure both valves are fully seated... Otherwise, you get this

[mexicanic]

So how did you hold the piston from rolling and not opening one of the valves?

[devontebuffenbarger]

Love your vids. Awesome job as always.

[fmbfla]

Is this a customer that came to you and asked you for some "Head Work"?😅

[stevenkleinhenz]

Had the same engine in my Harley Truck and blew # 8 spark plug out and had to fix that

[heyitschinoable]

You’re great brother i look up to you and many others a sa tech

[lnofgss]

ADVANCED LEVEL: Great videos, I just wish you could respond to some of your viewers questions or comments. I've emailed, I've donated to the channel, and questions and have never heard a peep.