popping

I'm new to these bikes and I'm not sure what is normal. I have a 1986 Vmax and I have noticed that when idling if I crack the throttle and also on acceleration that I can hear a fairly faint popping what seems to be coming from under the air box. I'm wondering if it's an intake valve issue. If...

Hello all, Well I finally started to troubleshoot my 85' Max (29,000 miles) and could use some advice. It was great a year ago when I bought it, now it gradually got to this point. Bike is completely stock except drilled muffs. It hesitates at WOT. (when i'm expecting the boost to kick in...

Ok guys. I performed a little maintenance on the max and installed new plugs, COPS, and a shotgun procedure. My max ran fine before the work. After initial startup idle was fine. All was good until the ride to work. After about 2 miles the popping began. Nursed it home after work "discouraged."...

Noticed a bit of popping out one of my right exhausts at idle. Recall reading here, concerns about popping. Wanted to ask you guys What it is, should I be concerned, and what would be a remedy?

Hey all, Apologies in advance I'm a new rider and know little about engines. The following has happened twice now, both on hot days, in NYC stop and go slow traffic. 1) I notice the engine feeling extra hot 2) The needle runs up to the red (just inside the red) 3) I soon after notice coolant...

Well I took the bike out for ride today to see how the new to me SuperTrapp slip ons sound. I noticed when I was at a steady pace it seemed to be hesitating and if I let off the throttle a bit it would start popping mostly from the left side pipe? I think it is running lean now do to moving...

Bike stalled today, has done it a few times. It happens in traffic at idle. The bike has had a popping sound I believe is from the carbs as soon as you bring the rpms up a touch. Bike restarts and when on the throttle or just cruising runs flawlessly. Im pulling it apart this weekend. Any ideas...

I have one cylinder that at idle and cruise will pop a bit, and when the bike is warming up, it only really fires occasionally, once the bike warms up it is better, but still not quite right. When I hit the bike hard full throttle open, it's fine, runs perfect, but on cruising around 2-3k...

My transmission pops back in neutral in 1st and second gear most of the time at low speed just pulling off at red light or stop. I'm thinking it's time to do the tranny change ( hmm that don't sound right ;-) ) and go undercut gears. Cold weather is coming and I'm thinking about doing the...

So was on the interstate today and hit 117 miles and it started to sputter so I switched to reserve and found a gas station and filled up with 91 octane I have never used this gas station before . Filled up and left got back on the interstate and bike now backfires pops from the exhaust when...

Yesterday I was syncing the carbs and every so often there's a little pop of air coming back through the sync port...maybe every 10 seconds or so, otherwise there's a vacuum there. The little pop is strong enough though, that it will blow the sync hose off the port after around 5 or 6 pops. I...

Hi everyone, I'm new to the forum and to the Vmax. I picked up my '85 with about 18k mile on it. It had very poor idle quality, bogged in between shifts and bucked and popped at cruise. I did the shotgun and it made a huge difference, but there are still some issues. The idle is erratic...

Hoping someone has some suggestions. Not sure on the jetting but believe it is stock since everything else is on the bike. I did the pea shooter on the carbs, sync'd them, checked the coils, and adjusted A/F to numerous settings and still have an annoying exhaust pop out of the right side pipe...

I recently got my bike back on the road after a long winter and after a few mods and have noticed a little popping at the exhaust when I start the bike up. It seems to go away after a minute or two. The carbs have all been gone through, cleaned and worn parts replaced, new battery, plugs...

Generally at a steady speed. 60, 70 80;it makes no difference. The bike pops through the muffler as though it's running rich. Some times at highway speed (ahem) it will bog down and require a shift to third to clear her throat but it never lasts for more than afew seconds before a repeat is...

so heres my issue. i recently rebuilt carbs , changed plugs and oil. cyncd carbs with a home made monometer. took the bike out and rode great for about 50 miles or so then i ran it hard and got the vboost opened up a few times and then noticed a popping from the right side exhaust but only under...

So now I've been through my carbs Fuzzy idles perfectly, he got a good sync too yesterday, spark plugs are brand new and the COPs are fitted. I also put in 147.5 main jet on Sean's recommendation since I'm running the Dale Walker slip-ons at sea level, and the A/F screws are all at 2 1/2 turns...

Backfiring popping thru exhaust at idle. Running Mikunis with a new motor, 1540cc, 13:1 compression with the .380 cams, dyna 3000 set at stock curve. I have a handle on how to get the top end and midrange right. Issue I'm having is that it is backfiring thru the exhaust at idle. I've...

I have a 1985 project vmax. While riding it has started making an odd popping sound from I believe under/inside the air cleaner box. Mainly at cruising speed, about 4000-5000 rpm. Under acceleration it does not usually happen. I have synced the carbs to the best of my ability, and changed the...

but if i open the boost manually by 1/3 the popping is gone.... it's popping if i cruise in this rpm range and on deceleration.....wot works fine The setup: Main DJ 160 PAJ2 DJ 150 Stock springs Stock needles shimmed 0.80 mm K&N + some drilled holes on the Y piece DAM slip on's Mixture screws...