[kymoto]

ok I just noticed a popping sound which I can not figure out where its coming from. now it only happens when I go in reverse and hit the brakes real hard and then ill go forward and just apply the brakes , that's when it makes a LOUD pop which sounds like its in the front end. anybody else heard this pop?

[NMKawierider]

No but given CFMs history with bolts and mounts, check all the diff mounts along with the engine mounts. Also check the front driveline u-joints and its carrier bearing.

[kymoto]

I just replaced the carrier bearings about a month or so ago... was thinking maybe the u-joint, but find it funny how it only does it when I hit the brakes hard in reverse..  hit the brakes soft no pop or hit the brakes hard going forward again no pop.

[gfmoto]

Check and tighten your A-arm bolts!   
Can you feel it in the floor when it "pops"? Mine was doing the same thing but only seemed to be downhill. a-arm bolts were loose and making the whole front end sloppy enough to make that noise. 

[NMKawierider]

I just replaced the carrier bearings about a month or so ago... was thinking maybe the u-joint, but find it funny how it only does it when I hit the brakes hard in reverse..  hit the brakes soft no pop or hit the brakes hard going forward again no pop.

There was also a guy that had a caliper bolt come out...something else to check.

[kymoto]

I actually just tightened all the A-arm bolts down the other week because they were sloppy , and this was the first time I drove it since I've done that.. wonder if some how it's connected to that.... I also thought maybe the Break caliber had came loose.. I gave them a quick look over and didn't notice anything.  I tired having my 6 yr old listen and tell me we're the sound was coming from , but we all know how that went..

[REDRIDER]

This sounds like A-arm to me. When you hit the brakes hard in reverse you are essentially putting a lot of forward pressure on the a-arms then when you go forward and hit the brakes you are putting rearward pressure on them. possibly a worn out bushing, could even be a ball joint.  I was the guy with the caliper bolt that backed out, that made the caliper flop down and get jammed in the wheel and broke the bolts and cracked the wheel.

[kymoto]

Makes sense,but do you think maybe ive got the bolt to tight?

[NMKawierider]

Makes sense,but do you think maybe ive got the bolt to tight?

LOL..with most CFM bolts, no such thing..unless it starts stretching or breaks. Besides, on a-arms, it just squeezes the inner sleeve between the posts..and that sleeve is supposed to.. not move. Easy enough to check the bushings...and ball joints.. for play though.

[kymoto]

I actually have new bushings ,but I hadn't put them in yet because after I tightened them down the A-arms are nice and tight now. but  I actually did have a A-arm come off shorty after buying it over a year ago while driving down a trail.

[Zforce800]

Check the mounts where the shock is bolted in on the top and the bottom. Also check the shock absorber itself. I had an upper shock mount popping when I would cut into a hard turn. Also, just a thought, but check the pads and caliper mount on the emergency brake. I had the pads on one side riding too high on the disk and it spurred me to check all the brakes including the e-brake. Found that loose.