Question about 1999 Mazda MX-5 Miata

1 Answer

Mx5, possible misfire, lack of power in low revs

My mx5 has just had a head gasket failure. the head has been skimmed and all refitted. i beleive that the cam belt was fitted wrong and it bent the valve stems. the mechanic replaced the valves at no extra cost although hasnt admitted poor fitting of the cam belt was the cause of the valve failures. ive had the car back for a couple of days now but it occassionally seems to misfire and very rarely has unresponsive throttle in the lower rev ranges. is there a simple answer or was the work just carried out by idiots who have ruined my car?

Posted by on

Ad

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that gotĀ 5 achievements.

    Governor:

    An expert whose answer gotĀ voted for 20 times.

    Scholar:

    An expert who has written 20 answers of more than 400 characters.

  • Expert
  • 100 Answers

Hi this sounds very messy if somebody has made a mess of things the only way to check it out is to get it to a reputable garage and get it checked over ,did you have the head pressure tested as a common fault with these cars is internal cracking of the head which can often look like a head gasket failure the only solution then is a complete new head good luck with this

Posted on Mar 06, 2011

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
New users get 2 Free calls (no credit card required) and instant help on almost anything you can think of (from cars to computers, appliances, handyman, and even pets).
click here to download the app (for users in the US for now) and get all the help you need.
Goodluck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Radiator blew out at bottom, engine overheated and now have no compression


You didn't say what your compression readings were. If you do another 2 compression tests and note down the figures..

The first test is a dry test as per normal. Prior to the second test - the 'wet test', spray some some penetrating oil into the cylinder, spin it on the starter to get rid of the excess oil.

The second, wet test, allows oil to get in between the piston and cylinder wall.

If, on the wet test, your compression readings go up significantly this points towards ring/piston damage or excess wear .. a worn engine. This will give you a good indication as to whether it is easier just to fit a second hand engine instead of doing the cylinder head.

If, after doing the wet test your compression readings don't increase by more than 10% compared to the dry test, this suggests that the pistons/cylinders are okay.

Remember that an alloy cylinder head must be skimmed before refitting. Cylinder heads warp because of heat and become 'banana shaped' - raised in the centre. Failure to have the head skimmed is likely to cause head gasket failure very quickly.

If you're going to repair the cylinder head you should change the thermostat as a matter of course. It's good practise, that's all.

Apr 27, 2016 | 2002 Honda Insight

1 Answer

2005 Bantam Rocam. Why won't it start?


have a compression test done as there may be bent valves from refitting the head and cam shaft/s incorrectly

Oct 13, 2015 | Ford Cars & Trucks

1 Answer

Running hot, low on coolant


chances are you have a head gasket leak, the top of the engine will need dismantling, the head may need skimming on a milling machine, the radiator, thermostat & water pump should all be replaced at the same time as a premature failure of one such as the head usually means the imminent failure of the others, everything apart from the head can be done at home by even a novice mechanic with a Chilton's manual to save on cost & a replacement head gasket done by a decent garage should cost between 500 - 700 bucks, but call around to get the best price.

Sep 21, 2012 | 2003 Buick Regal

1 Answer

Im having to change my head gasket, whats the torque spec and sequence on a 96 landrover discovery? im changing both head gaskets. anything i should know?


start in middle and work outwards alternately ,bolt torque 80lbs and pull down if three passes ,speed key --rachet- torque wrench .although iam posting this i never use a torque wrench i go by the feel of the bolt stretching ,make sure heads have been checked and skimmed before refitting

Aug 10, 2010 | 1997 Land Rover Discovery

1 Answer

My 3 year old polo done 24,000 miles been told


hi if it has low compression then this will mean one of three things the first and most likely is that the head gasket has gone this can be replaced but your head will need sending off to be pressure tested and skimmed to make sure it will work when refitted.
the second problem could be a cracked head in this case the head and gasket will need replacing but remember to check the thermostat and water pump as this can cause the head gasket to blow and could be the cause of the problem in the first place so get these parts checked

the third problem could be blown piston rings this is less likely unless the car has been driven with no oil.

let me know if you need further assistance ok

Mar 01, 2010 | 2002 Volkswagen Golf

4 Answers

MISFIRING ON CYLINDER 1 VW POLO 1.4 3CYLINDER


I have changed a few cylinder heads under warranty for this type of problem. The exhaust valve guides wear, this causes the exhaust valve to seat badly, giving low compression. if one cylinder compresion reading is more than about 50 psi below the others, then this warrants head removal. It is quite a job, due to the fact that the camshft id chain driven. If you are up for it then once the head is removed, poor liquid into the exhaust ports and see if it leaks out through any of the exhaust valves.

Jul 03, 2009 | 2002 Volkswagen Golf

3 Answers

Audi A4 2.5 V6 TDI - Creamy grey coolant in expansion tank


Sounds like blown head gasket (or worse) still to me.
Remove oil filler cap and look for grey oil.
Never use water these days but special coolant. Water makes vapour spots and cause block cracks, worse then blown gaskets!!!
vapour does not cool very well.
Look like you have cracks already.
Take a compression test if possible. But might not show op at that temperature.
The gauge indication troubles me.

Apr 14, 2009 | 1998 Audi A4

2 Answers

Suzuki Alto ejects randomly water from the radiator.


fan will only run when engine is hot,check its working ???if not check the relay connections.if and when you get the fan working see what happens,if it persists then bypass and run fan continuosly ,,see what happens if it still happens with fan on all the time then two possibilitys,,,,,head gasket or plastic impeller on water pump sliding on shaft and not turning ....

Dec 09, 2008 | 1991 Rolls Royce Rolls Royce Silver Spur

4 Answers

Loud diesel knock nissan terrano II head just replaced.


some black smoke comes out when i put foot down and loses power when goiong uphill i have a nissan mistral/terrano 2.7td

Nov 25, 2008 | 1999 Nissan Pathfinder

Not finding what you are looking for?
1999 Mazda MX-5 Miata Logo

294 people viewed this question

Ask a Question

Usually answered in minutes!

Top Mazda Experts

yadayada
yadayada

Level 3 Expert

76630 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22219 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

8516 Answers

Are you a Mazda Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...