SOHC.co.uk Forums > CB750
CR750 Running (or not running!) issues
Laverda Dave:
Hairy, I was chatting to the main man at the NGK stand at the bike show. I asked him how do we spot a fake, he said he couldn't tell me as this would get back to the fakers! Very odd, I thought they would do everything they can to publicise how to spot a fake? I mentioned about the logo rubbing off and the core not being made of copper, he appeared surprised. All he could say was to buy from a reputable seller.
Trigger:
--- Quote from: philward on November 24, 2018, 11:41:21 AM ---
--- Quote from: Laverda120 on November 24, 2018, 11:09:36 AM ---Phil, I understand you either have a resister cap or plug but never both? I would try the D8ES plugs as you mentioned and I think your problem will be cured.
Nice video and awesome looking (and sounding) replica.
Dave
--- End quote ---
Thanks Dave, just doing a bit of research and found on the .net site that some people have had trouble with the 8 plug in cold weather. Just thinking that this problem only occurred since the cold weather arrived, wondering whether a 7 rated plug Ward be better with this set up I have on the CR?
What do you think?
Sent from my Moto G (5) using Tapatalk
--- End quote ---
Moist, damp, wet air doesn't flow through foam filters very well in the winter. This will drop the air to fuel mix :o You could always leave it to the summer for better running ;)
philward:
Thanks guys (sorry been out all day) - too much fuel theory makes sense except haven't changed anything between good and bad running. Graham's cold damp air comments make sense, I think it's between that, fake plugs and plug temperature range (my set up might be sensitive to this) that makes sense to me. I'll try start up without foam filters, then swap plugs from my standard K2 (although R plugs) them order some none resister 7's from an NGK UK recommended stockist
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philward:
Just ordered 4 x D7EA's from Europarts - £8.29 delivered! (discount code END35) - Got to be genuine from a company that size surely!
Moorey:
Have you done a compression test on it.
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