Hesitation on revving and acceleration on Mk1 1.6
Discussion
Ello all,
The previous owner mentioned to me this problem and I've experienced it first hand a few times now, having been out and given the car a proper thrapping to get to know her.
The engine is fairly strong - admittedly its taking a while to get used to a revvy thrashy 4 cylinder again coming from a silky large capacity straight 6, but it seem strong enough.
However, occasionally, it will get it's knickers in a twist and start to get hesitant when you put your foot down or pull away from a standstill.
Quite often giving it some beans past 3k will clear it's throat, but yesterday it got very upset and left me stranded at the lights unable to start her for a minute or so.
Eventually it got going.
A wiggle of the ignition leads seemed to make it go away briefly, but it's back again and I'm keen to solve it.
I'm thinking that a set of spark plugs and new ignition leads would be a good start, and then looking to clean the MAF?
What do the resident beards think?
The previous owner mentioned to me this problem and I've experienced it first hand a few times now, having been out and given the car a proper thrapping to get to know her.
The engine is fairly strong - admittedly its taking a while to get used to a revvy thrashy 4 cylinder again coming from a silky large capacity straight 6, but it seem strong enough.
However, occasionally, it will get it's knickers in a twist and start to get hesitant when you put your foot down or pull away from a standstill.
Quite often giving it some beans past 3k will clear it's throat, but yesterday it got very upset and left me stranded at the lights unable to start her for a minute or so.
Eventually it got going.
A wiggle of the ignition leads seemed to make it go away briefly, but it's back again and I'm keen to solve it.
I'm thinking that a set of spark plugs and new ignition leads would be a good start, and then looking to clean the MAF?
What do the resident beards think?
tuttle said:
Hi there. From what you describe, it does sound like replacing plugs/leads might be the solution. I think the MAF is hot wire type & so probably not really serviceable.
Seems from what I've read re: the MAF, you're right.I'll do the plugs first.
Whilst I'd like to get them from MX5parts - do Halfords do them - i.e carry them in stock?
HT leads.
Seems to be the most common thing people have to change when buying an old MX5.
Plugs are a fairly standard type I think.
Leads can be had from Moss, Mx5parts, etc etc.
How are you finding the car? I drove mine exclusively for a year-ish, now I have another car its made me realise how much you have to get used to short gear ratios and having to thrape it everywhere.
It takes a bit of getting used to, (or not, I guess for some lunatics) to get used to it, but you soon learn that you CAN thrash the living daylights out of the car and they just seem to love it.
People say they are 'slow' but if driven in the correct manner then they will hold their own - certainly I've never had my pants pulled ALL the way down on any PH runouts with the more sensible cars.
The correct manner, of course, means regular excursions past the 6 on the tacho.
A by-product of this is you get rifle-cracks from the exhuast on changing up too
Seems to be the most common thing people have to change when buying an old MX5.
Plugs are a fairly standard type I think.
Leads can be had from Moss, Mx5parts, etc etc.
How are you finding the car? I drove mine exclusively for a year-ish, now I have another car its made me realise how much you have to get used to short gear ratios and having to thrape it everywhere.
It takes a bit of getting used to, (or not, I guess for some lunatics) to get used to it, but you soon learn that you CAN thrash the living daylights out of the car and they just seem to love it.
People say they are 'slow' but if driven in the correct manner then they will hold their own - certainly I've never had my pants pulled ALL the way down on any PH runouts with the more sensible cars.
The correct manner, of course, means regular excursions past the 6 on the tacho.
A by-product of this is you get rifle-cracks from the exhuast on changing up too
snotrag said:
How are you finding the car? I drove mine exclusively for a year-ish, now I have another car its made me realise how much you have to get used to short gear ratios and having to thrape it everywhere.
It takes a bit of getting used to, (or not, I guess for some lunatics) to get used to it, but you soon learn that you CAN thrash the living daylights out of the car and they just seem to love it.
People say they are 'slow' but if driven in the correct manner then they will hold their own - certainly I've never had my pants pulled ALL the way down on any PH runouts with the more sensible cars.
The correct manner, of course, means regular excursions past the 6 on the tacho.
A by-product of this is you get rifle-cracks from the exhuast on changing up too
Well I got dusted by a super old Honda Civic V-Tec with 3 up in it - but I think they're sometimes a bit quick anyway so that doesn't count.It takes a bit of getting used to, (or not, I guess for some lunatics) to get used to it, but you soon learn that you CAN thrash the living daylights out of the car and they just seem to love it.
People say they are 'slow' but if driven in the correct manner then they will hold their own - certainly I've never had my pants pulled ALL the way down on any PH runouts with the more sensible cars.
The correct manner, of course, means regular excursions past the 6 on the tacho.
A by-product of this is you get rifle-cracks from the exhuast on changing up too
It's quick enough - it's a completely different car to the BMW - whilst it does the same thing that the BMW does, it does it in a way that is so much more alive - the BMW cossetted you, kept you feeling safe - you never felt like you'd fall off the road if you didn't concentrate - wheras the MX5 feels like you need to be awake.
Which is perfect.
I've also spent much of my time sideways
Right, replaced the leads, same problem.
Seems to always happen when the car is warm.
Today, after a nice long drive it got so upset that eventually it stalled when we came to a stop, the car having kangerooed and generally seemed as if it was being overfuelled.
Tonight, in the wind and the rain, and the girlfriend tuttutting in the car, I turned it over and over, hoping it'd sort it's throat out, but no.
Eventually it failed to even catch - turning over but no fuel it seemed.
However I gave it ten minutes to cool down, and it was absolutely fine.
So, it seems it only happens when hot.
Searching about is pointing me at the crank position sensor: can anyone confirm this?
It's either that or the coil pack - both are £250!!!
So much for this cheap motoring lark!
Seems to always happen when the car is warm.
Today, after a nice long drive it got so upset that eventually it stalled when we came to a stop, the car having kangerooed and generally seemed as if it was being overfuelled.
Tonight, in the wind and the rain, and the girlfriend tuttutting in the car, I turned it over and over, hoping it'd sort it's throat out, but no.
Eventually it failed to even catch - turning over but no fuel it seemed.
However I gave it ten minutes to cool down, and it was absolutely fine.
So, it seems it only happens when hot.
Searching about is pointing me at the crank position sensor: can anyone confirm this?
It's either that or the coil pack - both are £250!!!
So much for this cheap motoring lark!
Hmmm... Coil pack is a possibility but so is temp sensor on the back of the engine. Could be a number of things but that's where I'd start. Do you know anyone locally with a 5 that you could "borrow" a coil pack from to verify if it's the cause?
If you need to buy then go to MX5 Heaven or Autolink.
If you need to buy then go to MX5 Heaven or Autolink.
This sounds the same as the problem I had. After changing the leads/plugs/coil pack I finally got to the green temp sensor at the back of the block...........bingo,sorted. If this sensor is faulty it sends all sorts of duff info to the ECU and runs rough and rich, give it a go it worked for me.
RVVUNM said:
This sounds the same as the problem I had. After changing the leads/plugs/coil pack I finally got to the green temp sensor at the back of the block...........bingo,sorted. If this sensor is faulty it sends all sorts of duff info to the ECU and runs rough and rich, give it a go it worked for me.
Hmm. Would make sense. Plus, it's the cheaper of the sensors: I may try this first, whilst depositing a tin of carb cleaner through the throttle body...neil_bolton said:
It's quick enough - it's a completely different car to the BMW - whilst it does the same thing that the BMW does, it does it in a way that is so much more alive - the BMW cossetted you, kept you feeling safe - you never felt like you'd fall off the road if you didn't concentrate - wheras the MX5 feels like you need to be awake.
Which is perfect.
I've also spent much of my time sideways
I've walked the same path...Now I'm back in a very cosy & comfy XJ with a creamy V8 & I can't tell you how much I miss driving my '5 to work, even in the tipping rain it would be roof down all the day.Which is perfect.
I've also spent much of my time sideways
It's a different kind of fun which you just can't replicate with a tintop
If it's a "strip down/clean up/put back together" job and not a "spray into intake while engine is running" job then that's ok. Just make sure no pieces of carbon/gunk/tissue/cloth etc. are left in the intake. If even a small piece of cloth gets caught in a valve it can cause serious damage to the valve.
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