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Detonation?

Detonation? MOTORCYCLE TALK logo

 

 




arkanosman
Enthusiast


Jul 22, 2006, 6:14 PM

Post #1 of 9 (1035 views)
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Detonation? Quote | Reply

I have this problem with a 1992 Honda VFR750F when I push it close to the redline, the engine suddenly starts acting like it's about to stall and I hear loud muffled bangs beneath me. So far I’ve tried all the adjustments possible and changed the spark plugs plus an engine cleaning fluid I bought. Nothing so far, I’m afraid it will blow to smithereens



(This post was edited by arkanosman on Jul 22, 2006, 6:15 PM)


Gearz
Enthusiast


Jul 23, 2006, 6:26 PM

Post #2 of 9 (1028 views)
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Re: [arkanosman] Detonation? [In reply to] Quote | Reply

I'm sorry to hear that but it really sounds like detonation Frown .Maybe you could get an aftermarket knock sensor that will tell you exactly if that's the problem


arkanosman
Enthusiast


Jul 23, 2006, 7:54 PM

Post #3 of 9 (1027 views)
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Re: [Gearz] Detonation? [In reply to] Quote | Reply

That's what i was thinking Frown . I'll try to get a knock sensor and report back although my deep desire is for it to be easily fixable and non damaging to the engine


mad_bikez_man
Enthusiast


Jul 24, 2006, 6:25 PM

Post #4 of 9 (1026 views)
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Re: [arkanosman] Detonation? [In reply to] Quote | Reply

Are you sure it isn't backfiring? Any flames out the back?


speed_illusion
Enthusiast


Jul 25, 2006, 11:37 PM

Post #5 of 9 (1025 views)
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Re: [arkanosman] Detonation? [In reply to] Quote | Reply

Sounds like backfiring to me too especially if it doesn't have the same symptoms at lower rpm's


arkanosman
Enthusiast


Jul 26, 2006, 1:25 AM

Post #6 of 9 (1024 views)
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Re: [arkanosman] Detonation? [In reply to] Quote | Reply

I got the knock sensor ordered now I’m waiting for the delivery. Funny thing is the sounds stopped Unsure


mad_bikez_man
Enthusiast


Jul 26, 2006, 2:14 PM

Post #7 of 9 (1023 views)
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Re: [arkanosman] Detonation? [In reply to] Quote | Reply

I already said by the sound of it it's backfiring, I hope the knock sensor will clear that out for you


glowingpipes
Enthusiast


Jul 26, 2006, 3:24 PM

Post #8 of 9 (1022 views)
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Re: [arkanosman] Detonation? [In reply to] Quote | Reply

Couldn't it just be odd muffler sounds?


ignition_spark
User


Aug 2, 2006, 3:54 AM

Post #9 of 9 (1011 views)
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Re: [glowingpipes] Detonation? [In reply to] Quote | Reply

Oh come on... odd muffler sounds? LaughLaughLaughLaughLaughLaugh. It's probably detonation; I suggest that after you get your sensor and confirm that you take it to a good mechanic

 
 
 


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