Gun Maintenace and Repair - 98 Custom Problem

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98 Custom Problem

Printed From: Tippmann Paintball
Category: Paintball Equipment
Forum Name: Gun Maintenace and Repair
Forum Description: Important info for keeping your marker in top shape
URL: http://www.tippmannsports.com/forum/wwf77a/forum_posts.asp?TID=188383
Printed Date: 17 January 2026 at 1:05am
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com

Topic: 98 Custom Problem

Posted By: Un5ung H3ro
Subject: 98 Custom Problem
Date Posted: 19 May 2011 at 8:06pm

I have a tippmann 98 that won't shoot above 220 fps. I upgraded almost everything hoping that thatt would fix the problem. I added an expansion chamber aluminum power tube and New Designs bolt and Hammer. I also added the hardest spring possible, none of that has helped. Any ideas as to what the problem is and/or possible solutions would help.

Replies:

Posted By: Ceesman762
Date Posted: 20 May 2011 at 9:04am

How did it shoot before you put in all of the mods?

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Innocence proves nothing
FUAC!!!!!

Posted By: Un5ung H3ro
Date Posted: 23 May 2011 at 6:22pm

It was shooting great, but then it started shooting below 260. That's when I put all of the mods on it.

Posted By: oldpbnoob
Date Posted: 23 May 2011 at 7:52pm

Take all the mods back off except the stronger spring and see what it does.

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"When I grow up I want to marry a rich man and live in a condor next to the beach" -- My 7yr old daughter.

Posted By: Un5ung H3ro
Date Posted: 23 May 2011 at 7:56pm

Did that nothing changed.

Posted By: oldpbnoob
Date Posted: 23 May 2011 at 8:53pm

Are you using CO2 or HPA? Are you sure your tank is full? Are you using a remote line or tank directly on the marker?

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"When I grow up I want to marry a rich man and live in a condor next to the beach" -- My 7yr old daughter.

Posted By: Un5ung H3ro
Date Posted: 23 May 2011 at 9:22pm

I have used both HPA and CO2, with both a remote line and directly on the marker itself.

Posted By: oldpbnoob
Date Posted: 24 May 2011 at 9:07am

Try using a full tank with it directly on the marker as sometimes remotes can starve the marker. Make sure you are not getting any leaks. Make sure you have the velocity screw turned out enough. Are you sure that it is assembled properly? Make sure when you reassembled the marker that you are not overtightening the receiver bolts. If you crank these down too hard, you can actually bind the internals. What the stronger spring does is allow the bolt to kit the valve pin harder to keep the valve open longer to let more air out. If you can't get your FPS up over 260 than something is either impeding the air flow out of the valve or the input into the valve. Make sure the HPA tank has a high pressure regulator on it and not a low pressure regulator.

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"When I grow up I want to marry a rich man and live in a condor next to the beach" -- My 7yr old daughter.