My model of MX-5 is: __NC 2.0L Sport Roadster I’m based near: __Essex I’m looking for technical help or recommendations on: __Hard Top Noise Roof down, no issues. Roof up, a lot of knocking when turning corners, going over light bumps. Any ideas? I’m planning on lubing the rubber at the weekend w…

As MaxBlack says. And different access options depend on lid high or lid low when deck is raised. Then follow the line of the cable and it SHOULD be clamped in various places, but if it has been out at any time quite likely missing them. There are Mellens guides on the PRHT etc on WaybackMachine,…

Funny I was going to post the same. Actually I lubed all the rubber on my PRHT and since then I am getting lots of knocking noise on my hard top when cornering, going on humps and accelerating briskly. It was all fine and knock free before I lubed the rubbers. Any advice?

You’re getting the noises AFTER lubing? Ooops! I was hoping this would fix it. I’m interested in other experiences with this knocking sound.

Yes, there were no noise before lubing all the rubber. I guess it softened the rubber and roof is now knocking the pillar and windscreen frame.

Apply some grease to the 2 pins that locate the roof to the top of the windscreen. Usually stops the rattle. Paul.

Thanks, but it’s more of a knocking than a rattle and coming from behind me. Initially I thought something was loose in the boot but not the case.

Hmm, two things come to mind as possibles, but they are not the only possibilities. See this picture below. The chrome-dome bolts work loose on the deck mechanism, either side. I secured mine with a touch of Medium thread-lock and it cured the problem. Red arrow points to it. The “roof hook…

Thank you. I’ll take a look at both of those at the weekend.

Thinking about it, how do I access that mechanism? :face_with_open_eyes_and_hand_over_mouth:

Open the roof but stop, ie take your finger off the button, after the roof has lowered but with the rear deck still as high in the air as you can manage. Hth and hope you find the source of the rattle sooner.

Thanks. I’ll look through those. However, are you saying the dome bolts are not easy to access?

Hard Top Knocking Noises

Technical Area Body, Interior & Styling

captainhaddock 23 April 2022 16:52 17

For instructions to adjust the closure mechanism see

PRHT roof / windscreen leak