Mazda Miata MX5: Crank No Start Diagnosis Part II
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Date: 2020-08-05
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Comments and reviews: 10
BobEaseShop
Howdy Eric, My cousin bought one of these things new in 1990. I restored it last year, motor out and new gearbox fitted. I found a nice old Mazda fellow who told me the lifters are known to stick. Was he ever right. All but two were frozen. We had the same horrible click clack. We called a nearby Mazda dealer and got a new factory set of lifters and it changed the world in this car. We also found the exhaust cam be bad. because of the stuck hydro lifters. The timing belts and other parts are a beast on these too. When I did this work and adjusted the timing my cousin got in the car and spun the rear wheels. not meaning to! These are not my cup-o-tea but they can be fixed and made to run very nicely on the cheap. I recall you putting a clutch in this car and remember you thinking oil was WAY up in the shifter tower. I too had to learn that the shifter tower has it own oil supply. Crazy cars in my book but they last and with a touch of Mazda knowledge not so bad to work on. I have my TR4 and old Jag so I'm happy. I can see the pull to these things but it ain't me babe! Good Luck Sir, Bobby
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Howdy Eric, My cousin bought one of these things new in 1990. I restored it last year, motor out and new gearbox fitted. I found a nice old Mazda fellow who told me the lifters are known to stick. Was he ever right. All but two were frozen. We had the same horrible click clack. We called a nearby Mazda dealer and got a new factory set of lifters and it changed the world in this car. We also found the exhaust cam be bad. because of the stuck hydro lifters. The timing belts and other parts are a beast on these too. When I did this work and adjusted the timing my cousin got in the car and spun the rear wheels. not meaning to! These are not my cup-o-tea but they can be fixed and made to run very nicely on the cheap. I recall you putting a clutch in this car and remember you thinking oil was WAY up in the shifter tower. I too had to learn that the shifter tower has it own oil supply. Crazy cars in my book but they last and with a touch of Mazda knowledge not so bad to work on. I have my TR4 and old Jag so I'm happy. I can see the pull to these things but it ain't me babe! Good Luck Sir, Bobby
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Brandon
The dip stick was actually good on that car? Now it's like every Miata on earth. They have the cheapest oil dip stick on earth in those cars, they break if you breath on them. That valve lifter noise is a common thing with those cars at startup. Some people switch from 10W-30 to a 10W-40 because they have a pretty low oil pressure at idle and it takes time for the oil to get up there. I found with a good 10W-30 synthetic it only does it for a few seconds. I've just tried the Penzoil synth. for the first time and it works great with my Miata or Amsoil Sig. works but I had problems with Amsoil's XL series which is their not top of the line oil after around 4K miles on it. Damn lifters would go on for a min or so. Weird but it was bad enough to get a new oil change and I thought I'd try the Penzoil top of their line and it's worked the best for that lifter/oil issue at startup.
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The dip stick was actually good on that car? Now it's like every Miata on earth. They have the cheapest oil dip stick on earth in those cars, they break if you breath on them. That valve lifter noise is a common thing with those cars at startup. Some people switch from 10W-30 to a 10W-40 because they have a pretty low oil pressure at idle and it takes time for the oil to get up there. I found with a good 10W-30 synthetic it only does it for a few seconds. I've just tried the Penzoil synth. for the first time and it works great with my Miata or Amsoil Sig. works but I had problems with Amsoil's XL series which is their not top of the line oil after around 4K miles on it. Damn lifters would go on for a min or so. Weird but it was bad enough to get a new oil change and I thought I'd try the Penzoil top of their line and it's worked the best for that lifter/oil issue at startup.
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John
Holy poop stains, adjust those cam followers! Truthfully it sounds like it's too late for that now. The lobe faces my be okay but the followers are most likely junk by now. Back in the days of youth, i got a 1980 Toyota celica gt with the 20r engine for cheap. Sounded almost as bad as this engine. New cam and followers fixed it - for the most part. The valves were right on the hairy edge of save them or toss them, i saved and held my breath for a few thou.
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Holy poop stains, adjust those cam followers! Truthfully it sounds like it's too late for that now. The lobe faces my be okay but the followers are most likely junk by now. Back in the days of youth, i got a 1980 Toyota celica gt with the 20r engine for cheap. Sounded almost as bad as this engine. New cam and followers fixed it - for the most part. The valves were right on the hairy edge of save them or toss them, i saved and held my breath for a few thou.
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UncleMarks
Wonder did they use adjusters or did they have shims to adjust Miata valves? Thanks for clearing up how you knew that it was a 20amp fuse. Thought you might have shorted by accident. Yep, I have not used a timing gun since my first shaves too! Dont even have a timing light any more. Dont tell my Mrs but I might need one soon, if I acquire a certain project. Another great video Eric!
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Wonder did they use adjusters or did they have shims to adjust Miata valves? Thanks for clearing up how you knew that it was a 20amp fuse. Thought you might have shorted by accident. Yep, I have not used a timing gun since my first shaves too! Dont even have a timing light any more. Dont tell my Mrs but I might need one soon, if I acquire a certain project. Another great video Eric!
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Not
You can adjust the valves but you needs shims of variable thicknesses as it's a shim and bucket design for the valvetrain. That Miata does sound like it has a loose valvetrain. Make sure its not having any problems getting oil up to the buckets (no clogs due to old oil, infrequent oil changes etc.
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You can adjust the valves but you needs shims of variable thicknesses as it's a shim and bucket design for the valvetrain. That Miata does sound like it has a loose valvetrain. Make sure its not having any problems getting oil up to the buckets (no clogs due to old oil, infrequent oil changes etc.
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Tad
HI tad here from Australia I got a Toyota Tarago 1994 got no spark change everything I think it's a camshaft position sensor Toyota say no camshaft position sensor on this car b. s I think it's got me bug-eyed why no spark. can U help it's a tcr10 motor tar
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HI tad here from Australia I got a Toyota Tarago 1994 got no spark change everything I think it's a camshaft position sensor Toyota say no camshaft position sensor on this car b. s I think it's got me bug-eyed why no spark. can U help it's a tcr10 motor tar
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Richard
You can actually hear the change of the engine when you rotate that cam/ crank sensor. My old 89 F150 300 straight 6 was old school, had to disconnect the spout connector to adjust the timing.
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You can actually hear the change of the engine when you rotate that cam/ crank sensor. My old 89 F150 300 straight 6 was old school, had to disconnect the spout connector to adjust the timing.
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Rick
My wife had one of those for years. Loved tinkering with it. SOOO easy to work on and fun to drive. As always, tks for bringing us along! Cheers to ice cream season!
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My wife had one of those for years. Loved tinkering with it. SOOO easy to work on and fun to drive. As always, tks for bringing us along! Cheers to ice cream season!
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J.
You always go above and beyond for your viewers. Thank you. As a youngn Ive never seen a timing light in action and that is simple and sensible. Pretty cool.
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You always go above and beyond for your viewers. Thank you. As a youngn Ive never seen a timing light in action and that is simple and sensible. Pretty cool.
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Tom
Remembers me of my old Miata. It also had a ticking noise from the hydraulic valve lifters and I broke the dipstick as well. It had done over 350000 km.
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Remembers me of my old Miata. It also had a ticking noise from the hydraulic valve lifters and I broke the dipstick as well. It had done over 350000 km.
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