New HW30s at UPS and being delivered today. (From Krale). I have read a lot here at Airgun Nation and I see "Dieseling" mentioned. Some say it's no problem and others say to clean the barrel before I shoot it the first time. If it occurs is it a puff of white smoke coming out of the muzzle as you shoot the rifle? Thanks .
Other Dieseling ?
- Thread starter Tarheel
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Ya, a good barrel cleaning for sure.
Most dieseling or any smoke you may see ( if really any) is probably factory residue being blown out in the breaking period and should clear up in under a tin of shots .
After a round of break in shots I like to reclean enugh to clean any crud that could of blew out of the piston tube till I'm satisfied were good ..
My hw experance on this has been worry free on that dieseling. It's harder to get rid of that funky new hw smell after a shot ..lol
Most dieseling or any smoke you may see ( if really any) is probably factory residue being blown out in the breaking period and should clear up in under a tin of shots .
After a round of break in shots I like to reclean enugh to clean any crud that could of blew out of the piston tube till I'm satisfied were good ..
My hw experance on this has been worry free on that dieseling. It's harder to get rid of that funky new hw smell after a shot ..lol
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Cleaning the barrel and dieseling are usually unrelated. You clean a barrel on a new gun with solvent to remove corrosion inhibitor and any debris stuck in it. A dampened patch of any of these, hoppes bore solvent, goo gone, wd40, Ballistol, denatured alcohol will work. Run the patches in from the breech end until clean and then dry patch to remove remnants of solvent.
Dieseling in new guns is the burning of the assembly lube left in the compression tube. Depending on how much was used it should diminish to undetectable in time. All springers lubed with conventional petroleum based lubricants diesel to some degree. That degree varies by compression tube and seal condition. Other than an occasional whiff of oil dieseling should be undetectable in a healthy gun. It's not uncommon to go through a 500 tin (or two) in a new gun to get there. If it never goes away the piston seal was likely damaged during installation. Very common
Dieseling in new guns is the burning of the assembly lube left in the compression tube. Depending on how much was used it should diminish to undetectable in time. All springers lubed with conventional petroleum based lubricants diesel to some degree. That degree varies by compression tube and seal condition. Other than an occasional whiff of oil dieseling should be undetectable in a healthy gun. It's not uncommon to go through a 500 tin (or two) in a new gun to get there. If it never goes away the piston seal was likely damaged during installation. Very common
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As I understand, most new springers are over-lubed with rust preventative grease for long term storage. This grease is not a good working lubrication and it diesels. You should degrease your rifle and relubricate with a good airgun lubricant
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Intentional dieseling is not an allowed AGN topic. Introduction of combustion able fuel blends the lines of distinction between airguns and firearms and will be removed.
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I didn't see any mention of intentional dieseling or intent to create dieseling here. The OP is new to air rifles and has read about the phenomenon and is asking about it.
No worries here
Feinwerk
No worries here
Feinwerk
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Ya, lol... That came out of nowhere...
Now there could be a blocker poster posted we can't see . Like your on his childish silly ignore list ...lol.
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Ironically, I just got a new old gun last week. That dieseling is intentional. A Weihrauch Barakuda. I have no intention of using any ether in it but I will be shooting it. It’s a beautiful shooting gun. Crow 
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My new HW95L was dieseling caused by over oiling/greasing by the factory. Excellent info on this forum and erratic POI indicated that I needed to correct this problem. Chrono #s indicated FPS was also swinging about 75 FPS. I installed an ARH kit with a Vortek seal along with a through clean/polish of the internals. I also used GPL-205, Krytox lube which is known as non-dieseling. The rifle averages about 17 FPE with 14.66 gr FTT pellets and the accuracy has returned while the FPS varies about 10/12 over 10 shots. This is the old seal that shows the damage caused by dieseling. I cannot detect any smoke coming from the shot cycle now and this is after about 8K shots with the ARH kit. The GPL-205 lube is expensive but IMO it is well worth the cost.
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Of course, large contamination of the compression part of the cylinder with flammable lubricants is not good, but dieseling in small quantities is certainly desirable, especially for 16J and above. That's why it's good to add a drop or two of silicone oil to the compression space at the right time.
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I got maybe two whiffs from my new (2 years in a closet) HW35 last week, nothing since. Patches still come out dirty after each shoot.
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Wow, that seal is fried! I haven’t been keeping up with the latest trends in airguns (my newest airgun was made in 1994) so please forgive my ignorance. What is Krytox for? The spring or the piston seal?My new HW95L was dieseling caused by over oiling/greasing by the factory. Excellent info on this forum and erratic POI indicated that I needed to correct this problem. Chrono #s indicated FPS was also swinging about 75 FPS. I installed an ARH kit with a Vortek seal along with a through clean/polish of the internals. I also used GPL-205, Krytox lube which is known as non-dieseling. The rifle averages about 17 FPE with 14.66 gr FTT pellets and the accuracy has returned while the FPS varies about 10/12 over 10 shots. This is the old seal that shows the damage caused by dieseling. I cannot detect any smoke coming from the shot cycle now and this is after about 8K shots with the ARH kit. The GPL-205 lube is expensive but IMO it is well worth the cost.
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Fairly normal for them to diesel a bit when new. Probably won't get supersonic cracks from the HW30, but some white smoke in the bore when you crack it open to reload is expected for a little while.
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All my springers smoke a little. Even after many thousand rounds. It's not excessive. Just a whiff of vapor. I figured they all do it. I've shot many different brands and types. Every one I've shot will do it a bit.
Some cleaning penetrants will remain in the barrel after cleaning. I notice the vapor more afterwards. I started using an acetone patch after cleaning to get the oils out. It works dandy. Still there is a bit of vapor in the tube after each shot on every gun I own.
I don't consider it "dieseling" or "detonation". It's just the pellet farting when the pressure hits it.
Some cleaning penetrants will remain in the barrel after cleaning. I notice the vapor more afterwards. I started using an acetone patch after cleaning to get the oils out. It works dandy. Still there is a bit of vapor in the tube after each shot on every gun I own.
I don't consider it "dieseling" or "detonation". It's just the pellet farting when the pressure hits it.
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I got a hatsan 95qe. All the cleaning and krytox and still ...
Portrayed actual shooting of it ..
Portrayed actual shooting of it ..
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