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Post by m40man on Mar 21, 2007 18:40:59 GMT
I have been working on my Trophy, looking at the usual suspects to account for an occasional on/off surge of power when riding at speed (perhaps more acurately - a reduction in power.) Not consistent with running on three cylinders - more subtle than that. All pipes are hot, plugs are perfect colour. : Fuel lines, Air ways Electrical connections, Sparks. I've replaced some less-than-perfect (some compression had occurred against frame - maybe poorly refitted tank!) fuel lines, and re-made connections to the coils as these weren't that tight. It will be tomorrow before I can test properly if these have made any difference. If these simple & cheap changes don't improve things, the coils would be natural suspects on these bikes. They have a reputation for failure. They are expensive from Triumph, and the natural replacement (PVL coils) are not easy to get. So - Given that Triumphs share a lot of bits & pieces with Japanese bikes (especially Kawasaki) I thought I'd ask here if anyone recognises these coils as being like they have seen on other bikes you may currently own / have owned over the years: This one (LHS) is in fact already a replacement PVL one:  ...... and here is the RHS one (looking identical (opposite hand!) to the PVL one - minus the PVL emboss on it)..  If they match the coils used on Japanese bikes, and my current 'cures' are not cures at all - Jap should be cheaper & more importantly easier to acquire. So your help would be appreciated. Of course there are other things I've not checked yet - simple & cheap like the fuel tank vent & so on, but I'd like to be prepared if I actually have to put my hand in my pocket! Why not go now & whip the tank of your bike & have a look for me ?  Thanks, Martin. |
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Post by jeepster1 on Mar 21, 2007 19:05:10 GMT
As long as the impedence is the same (usually around 2ohms) you can use any coil you like, even car ones. Time to get the old M&P cataloge out.
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Post by m40man on Mar 21, 2007 19:14:57 GMT
I've already checked the M&P cat - I'm hoping there might be a type which would allow me to use the original mounts. I'ts a bit crowded under the tank to find space for a bracket  (Their item 500 322 appears to be right, except for the mounting. It's a shame they don't come with pre-fitted HT leads, but at £33 not too bad.) Thanks for your input Jeepster - I know that Nology coils are also popular replacements for Triumph originals, but I can't find a UK supplier for them  . |
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Post by General Gman on Mar 21, 2007 20:48:04 GMT
If you can get am impedance rating, and it matches the gixxer, I've got coils a-plenty if you want em.Tryin desperately to remember the rating of them.2.2 Ohms i think....happy to pop em up to you or drop em off in Newbury if you want.
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Post by m40man on Mar 21, 2007 21:49:08 GMT
That's a jolly nice offer Gurnin - maybe I could borrow some to try. I could bodge them in somewhere, go for a run, see if things improve. That way I would know if coils were the issue. If it wasn't for the reputation Triumph coils have, I wouldn't be suspecting them yet. All pipes are hot, the plugs are all good, so the clues aren't really there. Right now my gut feeling is fuel starvation - but I'm trying to prepare for all eventualities. I'll PM you - see about having a borrow . Thanks  |
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Post by teejayexc on Mar 21, 2007 21:52:28 GMT
The borrower meets the artful bodger ;D Should be a TV series. Trev |
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Post by rollingwreck on Mar 21, 2007 22:59:07 GMT
Re: Coils - advice please...Ah sorry, I though this was a disussion on birth control. I'll get me coat ......... 
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Post by General Gman on Mar 21, 2007 23:05:18 GMT
The borrower meets the artful bodger ;D Should be a TV series. Trev ;D ;D |
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Post by Dame judgejools44 on Mar 21, 2007 23:12:11 GMT
Re: Coils - advice please...Ah sorry, I though this was a disussion on birth control. I'll get me coat ......... Funny that...so did I! ;D |
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Post by CD on Mar 23, 2007 17:46:41 GMT
A few questions before you junk the coils...
When were the valve clearances checked?
Have you checked these:
Fuel filter,
Fuel tap
Fuel pump (if fitted)
Water in carbs
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Post by m40man on Mar 23, 2007 18:15:58 GMT
Hi Chiro(Dave!), Don't fret - I won't be junking coils just yet. I'm just after finding out if other bikes use these coils - for ease of availability should it prove neccesary. If it wasn't for the Trophy's reputation for duff coils I'd swear I have a fuel starvation problem. In fact today I found that their were no hose-clips on the airbox-carb rubbers. The airbox was easily moved back from the carbs, strongly suggesting a gappy fit. After checking with one of my many tele-support technicians (Thanks, Trev ) that this seemed out of order, I've so far got clips onto both the outside carbs. The inner ones will cost me several layers of knuckle skin, the access is so poor - but I'll do those tomorrow. (I have reassembled & tested the bike again, after doing the two outers, & I'm pretty sure it has already improved.) I will give the carbs a clean whilst I'm at it. Then if the overall improvement is not good enough, or I was fantasising about it already being a bit better today, I'll look again at the coils. The Gurnin one has already offered me some Suzuki ones to play with, so I can test before committing to buy pukka ones . I really wanted to take the bike for a decent run this afternoon, but for reasons unknown to me absolutely everyone else wanted my roads today. Until I know it's truly sorted, I am mostly just dreaming about overtakes so I've been stuck in the traffic flow rather than being able to give her a good thrash |
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Post by CD on Mar 23, 2007 21:36:43 GMT
I fancied a ride out today, but the roads down here are so well salted I'd not trust the surface anywhere outside car wheel tracks. Perfrct bike lines probably like marbles not to mention exits from traffic islands. They're out gritting again tonight & my Aldi (tm) weather station says its 10 degs C & 54% humidity. So its well on the way to snow and freezing weather.
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Post by General Gman on Mar 23, 2007 21:44:14 GMT
Hi Chiro(Dave!), Don't fret - I won't be junking coils just yet. I'm just after finding out if other bikes use these coils - for ease of availability should it prove neccesary. If it wasn't for the Trophy's reputation for duff coils I'd swear I have a fuel starvation problem. In fact today I found that their were no hose-clips on the airbox-carb rubbers. The airbox was easily moved back from the carbs, strongly suggesting a gappy fit. After checking with one of my many tele-support technicians (Thanks, Trev ) that this seemed out of order, I've so far got clips onto both the outside carbs. The inner ones will cost me several layers of knuckle skin, the access is so poor - but I'll do those tomorrow. (I have reassembled & tested the bike again, after doing the two outers, & I'm pretty sure it has already improved.) I will give the carbs a clean whilst I'm at it. Then if the overall improvement is not good enough, or I was fantasising about it already being a bit better today, I'll look again at the coils. The Gurnin one has already offered me some Suzuki ones to play with, so I can test before committing to buy pukka ones . I really wanted to take the bike for a decent run this afternoon, but for reasons unknown to me absolutely everyone else wanted my roads today. Until I know it's truly sorted, I am mostly just dreaming about overtakes so I've been stuck in the traffic flow rather than being able to give her a good thrash 'course, if you really want it to feel fast, you'll be needing a gsxr750 mudguard.... with a rather natty OSS sticker... rpolly double the value of the bike.... |
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Post by General Gman on Mar 23, 2007 21:46:09 GMT
Oh, and to test for air leaks round the carb rubbers, have you tried the ole spraying wd40 on em trick at idle ?
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Post by m40man on Mar 27, 2007 17:55:28 GMT
I thought it was probably time for an update, for all you folks anxiously awaiting my return to form in the overtaking department . I've just had two glorious days' commutes. Enough to warrant taking the long way to work, & back ;D. With a new front tyre fitted last week now scrubbed in, and a motor purring (in as much as Triumph's purr ) overtakes & swift cruising are once again the order of the day. For anyone who might be experiencing similar symptoms to my Trophy's occasional splutters, this is what I did, in order: Replaced some fuel lines just because I found them to be hardened when I checked them. Cost about £3.50. Checked the air filter - found it sound so left it alone. Fitted hose clips to the airbox/carbs union 'cos I found none there! At this point there was an improvement, but it wasn't great. It wasn't 'cured'. But all this was sensible maintenance, & cheap to do. Before attacking the carbs for a proper strip & clean (which would have taken the bike off the road for the Postcombe Run ) I then added half a bottle of Redex to half a tank of fuel & went for another run. Not much difference. Next day - another run, the redex having had time to sit & do it's thing. It was like riding a different bike. I then ran another tank of fuel through the bike, emptying the rest of the Redex into it. A weekend run just saw it get better & better. This weeks' early commutes have been such fun. At the end of the day it looks like I just had dirty carbs. There remains an occasional stutter below 2000RPM but I get that on my Divvy, the CX and the Fazer was similar. Choosing a lower gear solves that problem . So there you go - sometimes it's the cheapist solutions that do the trick. Frequently, in fact ;D |
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Post by HRHpenfold on Mar 27, 2007 18:32:09 GMT
nice one, been putting redex through my divvie 600, dunno why though, i just am ;D
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Post by CD on Mar 27, 2007 20:48:17 GMT
nice one, been putting redex through my divvie 600, dunno why though, i just am ;D Just ask M40man Note to me... GET SOME REDEX |
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Post by m40man on Mar 29, 2007 18:02:31 GMT
Well - I found that actually when pushing on bigger roads a stutter remained. reading the huge thread on www.triumphrat.net about Triumph coils - I decided to go for it. I've now replaced the coils - & she really does purr along. I won't do any more to her now, or she'll end up as smooth as a Jap bike (This fixed the low revs stutter too - & the warm-up in the mornings is much quicker.) (Big Up to www.motobins.com - BMW spares suppliers. Coils delivered within 48 hours of ordering! PVL coils - recommended replacements for the iffy Triumph stock ones - though motobins don't realise this.) All this work just to facilitate overtaking Beebs - but worth it, I reckon |
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Post by pebbles on Mar 29, 2007 20:29:45 GMT
realign the plasma coil injectors (dont forget to take coil offline b4 u do this) check the matter anti-matter flow capacitors, fire up warp engines (refering to haynes)
as for bikes forget not got a clue
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Post by General Gman on Mar 29, 2007 20:35:10 GMT
realign the plasma coil injectors (dont forget to take coil offline b4 u do this) check the matter anti-matter flow capacitors, fire up warp engines (refering to haynes) as for bikes forget not got a clue do you fit the dilithium crystals before or after you check the flow capacitors ? Never seem to get it right and end up in the far reaches... |
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