Partzilla Live Q&A with John Talley – March 25, 2021

Partzilla brings you another edition of Live Q&A with master technician John Talley answering your motorcycle and ATV repair questions. 

This week’s session started off with some technical difficulties, but once they got fixed (with the exception of a few questions) it was all Honda ATV and Honda motorcycle questions once again. Check out some excerpts from Partzilla’s latest live Q&A session below, and tune into our YouTube and Facebook channels every Friday at 3pm Eastern for the next edition.

Partzilla Live Q&A with John Talley 03-2521

Honda ATV Repairs

I have a 2005 Honda 300EX and the bike turns over, but I’m still not getting any spark. I replaced the CDI and I checked the fuse and it was good and all the lights turn on. What could be causing this?

John Talley: There are a couple of different things, one of them being your neutral switch, one being your gear position sensor, and we go through a similar diagnostic on a 400EX, which they should be fairly similar as far as their schematics. So if you would, reference that video and see if we can point you in the right direction.

I have a 1998 300EX and it won't start after sitting for a few months. What should be my first thing to check?

John Talley: I say this quite often, but I’m telling you, especially on these older machines, when they’ve got a fair amount of wear on the intake valves, that closes up your clearance and then they’re not closing all the way, especially when they’re completely cold. So check your intake valve clearance and make sure it’s not too tight. I’m telling you, nine times out of 10 that’s what it’s going to be. 

Honda Motorcycle Repairs

The clutch on my CRF450 gets hot a lot. Is there a way to cool it down?

John Talley: Well, the clutch on the 450 has a separate oil, or it’s supposed to be separate, from the front. And it depends on what weight of oil you’re running in the back. … You may want to consider going to a full synthetic. Maybe that’ll help dissipate the heat a little better. My guess is that the oil is a little too thick and you may need to thin it out just a tick to see if that helps.

Do you recommend a shift support for a 2020 Honda Grom?

John Talley: I’m not sure what you’re talking about with the shift support. If you’re talking about a different shifter, or what do they call it, a peg set? Yes, especially if you’re a big guy like me. And we actually did that on a Grom that we gave away … Look at the Grom videos that we have and see if that’s what you’re talking about with the different shifter and the rear peg set that we put on it.  

Want to see more live repair questions answered? See all of Partzilla’s Live Q&A sessions here.  


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