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1000SP Progress(?)

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iceni View Drop Down
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    Posted: 13 Apr 2019 at 18:00
Fitting of LED idiot lights now completed so putting it all back together ready for the road.  Needless to say, I’ve hit a snag or two, the main one being the RH cylinder running hotter than the left. Valve clearances are ok but a compression test shows 108 on LH cylinder and 90 on the right. Valves have been lapped in so should be ok.  Too cold to pursue it any further today.Confused
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Chris A View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Chris A Quote  Post ReplyReply Direct Link To This Post Posted: 13 Apr 2019 at 23:42
What about the timing ? You still on points?

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Post Options Post Options   Thanks (0) Thanks(0)   Quote johnno Quote  Post ReplyReply Direct Link To This Post Posted: 14 Apr 2019 at 00:14
Originally posted by Chris A Chris A wrote:

What about the timing ? You still on points?

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iceni View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote iceni Quote  Post ReplyReply Direct Link To This Post Posted: 14 Apr 2019 at 07:17
When I took delivery of the SP I discovered an unacceptable problem with it, along with other undesirable faults, consequently I’d only ridden it round the block before I started remedial work on it.
The dealer has replaced one major part but I’ve been sorting the other issues myself, as to send it back under warranty would cost me about £300 there and back.
Now, the bike was stated to have had, prior to delivery, a full device at a very reputable Guzzi workshop, so I have assumed that all is well with it, and not gone into the timing as yet.
It was necessary for me to remove the heads to inspect the bores so I did the valves as a matter of course, and re-used the copper head gaskets after annealing, one of which may be blowing slightly.  Checking that is my first job next time I go out to fight the bastard again.  I will be checking the timing due to the fact that the full service didn’t include a new air filter.
Needless to say, I’ve changed the oil and filter in the light of that discovery (and others).  Not sure if I’ll ever love this bike,Sleepy
ps yes, it’s still on points.



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Brian UK View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Brian UK Quote  Post ReplyReply Direct Link To This Post Posted: 14 Apr 2019 at 08:01
I know of another case of a bike being bought from a reputable dealer, and fully serviced before sale.
Turned out one piston had been put in back to front.
Brian.

Better 5 minutes late in this world than years early in the next.
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Doug View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Doug Quote  Post ReplyReply Direct Link To This Post Posted: 14 Apr 2019 at 08:43
I would suggest that your compression pressures are far too low and you need to investigate further.
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Brian UK View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Brian UK Quote  Post ReplyReply Direct Link To This Post Posted: 14 Apr 2019 at 09:43
Not so simple to do but a leak down test will tell you where you are losing that compression.
Brian.

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Post Options Post Options   Thanks (0) Thanks(0)   Quote Chris A Quote  Post ReplyReply Direct Link To This Post Posted: 14 Apr 2019 at 09:51
Compression numbers are low...I'd expect minimum of 150 and should really be near 200.When you do the test the throttles need to be fully open.The fact that your test  figures are near enough the same on each cylinder is good and that's why I asked about the timing ....You could well be out on one cylinder, especially with points as the heels wear and the adjustment slots are nearly always too short to be able to compensate.They can be elongated with a rat's tail which would probably suffice.Most folk eventually fit an electronic ignition because setting the points can be a real hassle on these bikes
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iceni View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote iceni Quote  Post ReplyReply Direct Link To This Post Posted: 14 Apr 2019 at 12:27
Thanks for comments/ advice.  Didn’t have throttle open when I did comp test so I’ll give that a go first. I checked points gap and plugs but that’s all so far.  Odd thing is that on the hot cylinder with blue downpipe, the plug indicates it’s running very rich.
Will get on to it tomorrow.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Chris A Quote  Post ReplyReply Direct Link To This Post Posted: 14 Apr 2019 at 13:53
Put a strobe on it after the compression test Iceni...richness could also be the starter circuit on that carb remaining on.I had a lot of hassle with that at one point as the cable was catching at the junction box and so one carb was constantly rich.Eventually went over to the flip top types and the problem was definitely cured.
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iceni View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote iceni Quote  Post ReplyReply Direct Link To This Post Posted: 14 Apr 2019 at 14:32
Thanks Chris.  Good call is that , as I noticed the cable was trapped on the rich side so have freed it. 
Picking strobe up later today. 👍
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Mike H View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Mike H Quote  Post ReplyReply Direct Link To This Post Posted: 14 Apr 2019 at 14:37
Copper head gaskets??? Shocked Ooh no. No no no. If it means what I think it means. Just no. Heard too many horror stories. Would not touch with a long pole. OEM composite type only. And I always fitted new if ever disturbed.


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Mike H View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Mike H Quote  Post ReplyReply Direct Link To This Post Posted: 14 Apr 2019 at 14:44
PS yes mine "had a service" too, there so many horrendous cock ups it cost a LOT of money and about 2 years to sort it all out, including damage caused by a partial seizure (breather hose not secured so came off on the M6 and dumped the sump contents), manifold air leaks and dangerously unsuitable new tyres. Ouch

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iceni View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote iceni Quote  Post ReplyReply Direct Link To This Post Posted: 14 Apr 2019 at 15:16
Hells teeth!  Problems all round then. 
Is there a common denominator, I wonder?
I thought copper head gaskets were ok but sounds like I should replace them.  Mine of good info is this forum!
Thank you one and all.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Chris A Quote  Post ReplyReply Direct Link To This Post Posted: 14 Apr 2019 at 18:30
I'm with mike on the gaskets too   and don't go for the thin black engine gaskets either...they are complete leaky sh*te !!Old style  Green ones are good. Really glad about the choke being an issue and best with the strobe...sound like tow morrow all your troubles will be over.
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