Mk2 1.6 feels a bit strained in upper rev range

Mk2 1.6 feels a bit strained in upper rev range

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Matt_N

Original Poster:

8,905 posts

203 months

Monday 30th March 2009
quotequote all
I took the missus' Mx5 to get some new tyres fitted on Saturday, but something just doesnt feel right about it.

When we first got it, Im sure there used to be a nice little surge as the engine reached 4.5k - 5k rpm, but it felt really flat to me and sounds a bit strained.

On tickover it sounds fine, doesnt hunt, nice and smooth and revs cleanly, it just feels really flat when driving.

It was serviced last August with the correct grade oil, filter, air filter and NGK spark plugs and has done around 4k miles since.

One thing that I did notice though, was that when the wheels were off at the tyre fitters, the NSF caliper looks like it has been sticking a bit, as the pad is noticable lower than the OSF.

Ive ordered some new pads (EBC Kevlar) so Ill fit them this weekend and strip the caliper down and copper grease the slider bolts, but could this have been binding a bit and slowing the car down, or is there something more sinister wrong?

Btw the cambelt is due to be changed, which we'll be doing shortly.

Matt_N

Original Poster:

8,905 posts

203 months

Monday 30th March 2009
quotequote all
No she doesnt really 'drive it' as such, as she generally pootles to work and back, so it prob never gets taken over 4k rpm.

Ive got some throttle body and intake manifold cleaner spray, shall I give it a whizz of that to see if it improves.

I drive a Mk4 Golf 1.8T, whilst not exactly rapid I suppose it does feel quicker due to the turbo.

I did read quite a few reviews on the pads and although there were a few negative ones, the majority were positive, apparently they're quite dusty though. Plus they are less than half the price of Mazda ones, and as said it rarely gets driven hard, the current Apec ones are awful, no feel what so ever.

Going to clean up the calipers, re-do the slide bolts, fit the new pads and change the fluid, which will hopefully improve the braking.

Matt_N

Original Poster:

8,905 posts

203 months

Monday 30th March 2009
quotequote all
hehe

Ill give it a good 'test' drive after I do the brakes this weekend then.

Worth a squirt of cleaner aswell or not?

Matt_N

Original Poster:

8,905 posts

203 months

Monday 30th March 2009
quotequote all
vrooom said:
What can you use to squirt the intake with? wd40?
Ive got some throttle body and intake manifold cleaner that you spray into the intake system.

I bought it to clean out my throttle body, but did so with it disassembled rather than spraying it in.

Its carb cleaner pretty much.