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Old 11-07-2008, 04:02 PM #1
bassist11
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Strange things happening

Ok so I've had my Marq 6 a while now. Just pulled it out of the gearbag for the first time in a month or two to see how it was shooting and ran across this problem. Air it up, shoot, and all it puff air a little, like the the LPR is turned down waaay to low. So I get my tester out and check what it's running at. 230 and 80, just like it should be. Hmm.... So I up the pressure to 240 and 90, put it back together and shoot again. Basically the same thing happened. Little puffs of air and occasionally an actual shot.

Here's the odd part though, it happens randomly, but when the bolt cycles, it will stop in the middle of the breech on the way back and sort of "pop" back all the way. It's actually stopped in the middle of the breech completely until I shoot it again. There is an audible "pop" when it does this, sounds almost like the front bolt o-ring is getting caught on the feedneck lip on the way back, only the bolt will stop before it gets to the front o-ring so that can't be the case.

All of this said shooting was dryfiring with a hand over the breech to prevent a blown pillow bolt. Marq is stock, pillow bolt, QD ram, frenzy 3.00. Also my dwell is at 8. Would a low battery cause this? I'll check that later.

Any ideas?
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Old 11-07-2008, 04:10 PM #2
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Most likely a low battery. Mine did that in the middle of a game. It went from shooting fine, to balls rolling out of the barrel, to click click click.
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Old 11-07-2008, 07:01 PM #3
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try lubing the bolt too. Sounds like you know your Marq pretty well so please don't think I am flaming.
Good Luck!
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Old 11-07-2008, 07:04 PM #4
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mine did the same exact thing a few weeks ago, what happened with mine was a piece of the o-ring on the oustide of the engine came off and got jammed in the slot in the bottom of the body were the air comes in.
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Old 11-07-2008, 08:17 PM #5
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^^^ yup yup. this is probly your problem. just make sure that the 3 holes are lined up and that the rear transfer hole is clear
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Old 11-07-2008, 11:16 PM #6
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Ok battery is fine. I shot it a bit more and now it leaks down the barrel after a few shos. I'm thinkin your right. Darn engine o-rings.. I didn't think you had to worry about lining the holes up on a Marq 6?
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Old 11-07-2008, 11:24 PM #7
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All Marq engines are the same. You have to line up the holes on any Marq.
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Old 11-07-2008, 11:33 PM #8
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^^^ not mummies
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Old 11-07-2008, 11:46 PM #9
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Ok well after a full lube down and outer o-ring replacement, it still doesn't seem right. The bolt stopping in the middle of the breech stopped along with the leak, but it still doesn't seem to be shooting right. It cycles fine but if I were to actually shoot some paint, it would probably drop right out the end of the barrel. It's hard to say really without actually shooting some paint, which I can't do right now (it's snowing, freezing out), so I suppose I'll just have to wait for a little nicer day.
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Old 11-08-2008, 12:18 AM #10
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make sure your poppit isnt damaged
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Old 11-08-2008, 07:58 PM #11
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Make sure there is no lube on the lip of the cup seal. It may be the cold weather although my marqs work fine in temps lower than 40.

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Old 11-08-2008, 08:22 PM #12
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i have the feeling that u might have some debrees in air transfer hole closest to the back of ur gun...definitely check that for debrees and also make sure ur poppit isnt damaged (nicks, scrapes, etc)
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Old 11-08-2008, 10:51 PM #13
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Whoa Dickinson airport? That's not my dickinson though. Where is that at?

And I'll check those spots. Ryguy916, do you mean the air transfer hole in the engine assembly or from the gun itself?
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Old 11-09-2008, 11:11 AM #14
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Check both of them

That is North Dakota, I stop there quite often while on my way to Great Falls and Seattle. That was August 2007 before they added on to it.
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Old 11-09-2008, 01:24 PM #15
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the transfer hole in the gun itsself first, ive never heard of anything blobking any of the holes in the engine

the slot closest to the rear of the body is usually the culprit of an issue like this
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Old 11-09-2008, 01:37 PM #16
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Quote:
Originally Posted by IgnoranceInABag View Post
^^^ not mummies
correct

the only difference between them and a normal engine is that a normal engine is has flat air inlets and a single hole (which is why they must line up), the mummy engine is grooved and has multiple air inlet holes so that it can activate from any orientation within the marker (hence why mummy's could use the screw in back)
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Old 11-09-2008, 01:46 PM #17
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good call elpanda
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Old 11-09-2008, 04:17 PM #18
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OK I checked the engine and there was some dow in the hole but thats it, cleaned that out. Also, I left the engine out and aired the gun up for a sec to blow anything out of the body hole. Seemed to be just fine. Would you have to check the body hole from the grip frame side?

Poppit looked just fine when I lubed it up yesterday.

After I checked the air transfer holes, I aired it up and dryfired a bit more. Still the same. Cycles just fine but would chrono at 100 if I had to guess.. I upped the pressure on the reg and that seemed to help so I'm thinking maybe my regs are just too low? Would a stock Marq 6 need higher reg settings than 240 and 90?
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Old 11-09-2008, 04:24 PM #19
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id say check that transfer hole really well (like run a o-ring pick through it)... its pretty hard to tell if theres something in there
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Old 11-09-2008, 08:57 PM #20
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Change the external engine o-rings and make sure that there is a small bit of triflow on the bolt to prevent it from sticking.
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