Question about 2003 Toyota MR2 Spyder

1 Answer

2003 toyota mr2 exhaust valve

I have a mr2 ive been to 5 places and 2 of them has been dealers i keep getting the run around they are telling me that my motor is misfiring and that the compression is not there its reading i think 75 or 85 and the other 3 are at 185 and up so everyone keeps telling me to replace the motor now i just took it to a place and there saying a exhaust valve never heard of it and they say its common so please help

Posted by on


1 Answer

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

It could also be broken piston rings...but if your not burning or using oil, highly likely. The way to check wether it is piston rings or an exhaust valve is to put some oil(about 2 tablespons) into the effected cyclinder space by removing sparkplug and adding. **you must remove all sparkplug leads at this time to prevent it from "firing". If you then attatch a compression guage to the cyclinder, turn the engine over with the starter motor,noting the reading. If it is "broken rings" the compression will improve dramatically with engine turnover. If it stays the same the culprit is a burnt exhaust valve(s). This should ONLY be done by a competent person. Hope this helps

Posted on Jan 16, 2013

  • James Foreman Jan 16, 2013

    Sorry, should read"It could also be broken piston rings...but if your not burning or using oil, highly UNlikely



6 Suggested Answers

  • 2 Answers

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

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.
the service is completely free and covers almost anything you can think of.(from cars to computers, handyman, and even drones)
click here to download the app (for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017

  • 12 Answers

SOURCE: 2000 toyota tundra #5 cylinder misfire

i think #5 is on driver side the front one....

Posted on Dec 30, 2008

  • 1861 Answers

SOURCE: engine light 03 matrix

Go to an AutoZone, or a place like that. They scan the car for free, andf they give you the codes. After you get the codes, please get back to me for more help.

A FixYa rating would be greatly appreciated.

Posted on Jan 23, 2009

  • 104 Answers

SOURCE: p0441

i would have the front vacuume switching vavle checked

Posted on Apr 18, 2009

  • 420 Answers

SOURCE: high oil consumption on 2001 Toyota Highlander- 3.0 V-6 engine

If you are using that much oil you either have a BIG leak or your BURNING oil through bad rings

Posted on Jun 09, 2009

  • 1986 Answers

SOURCE: toyota mr2 roadster 2001 engine light on code po141 oxygen sens

bank 1 will be whichever side cylinder 1 of your engine is and bank 2 will be the opposite side. It's named bank 1 and bank 2 so that no matter how the engine is laid out, bank 1 is always on the same side as cylinder 1. I cannot say whether the right hand or the left hand one will be bank 1 as I do not know where your cylinder 1 is. The garage should know

Posted on Sep 08, 2009

Add Your Answer

Uploading: 0%


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



Related Questions:

1 Answer

How do I find out whether my 2003 toyota mr2 spyder has a factory installed remote keyless entry system installed

First of all, if you don't have a "key fob" (the key "ring" that came with the car and has small buttons on it), you wouldn't be able to utilize the system. If you DO have a key fob, and have pushed all the buttons and you can't enter the car, then most likely you don't have key-less entry. To find out for sure, go to your local Toyota dealer and ask them whether or not you have it. If it is factory installed, the VIN should tell them one way or the other.

Jul 14, 2014 | 2003 Toyota MR2 Spyder

1 Answer

Mr2 2004 knock sensor is lighting the engine management light

Try checking your O2 sensors if you have one that isnot working all the time you will get that reading. If you don't have a computer readout machine take it to an auto zone or another auto parts place they will run the diagnostic tool on your car and tell you what it is as it will give you a code

May 05, 2014 | 2003 Toyota MR2 Spyder

1 Answer


Which shield? Do you have a pic? If its the "Diaper" that hangs off the rear bumper, you should be ok. I took mine off when I first bought the car, has no effect whatsoever. If its a heat shield that's around the exhaust, it also has no effect, maybe a slight performance decrease due to higher engine bay temps.

Feb 17, 2011 | 2003 Toyota MR2 Spyder

1 Answer

Last chance saloon before i take the car to toyota & get stung. I own a Toyota MR2 Y ref 2001 with 78k on the clock. 2 days ago the malfunction light came on the dash, car is running well, i see no...

Just to let you know.There is many good shops that have paid to buy the money to buy the diagnostic gear for your car.The main thing is they don't charge the prices the dealers do.This is a real example.A co-worker paid $28 a litre for oil in his kawasaki the other day.It retails for $12....$12.!!!this was at a dealer.
Shop around.Talk to mates.Where do they get their cars done.
Ring around.It will save you heaps
Hope this helps

Sep 07, 2010 | 2001 Toyota MR2 Spyder

2 Answers

Not really a problem, more of a pain in the ***.. Ive had my MR2 for about 3 yrs now.... got 275k+ miles rebuilt eng once at 15k.... still running strong, now heres the thing, theres no repair manuals for...

The only thing I know to tell you is to try I just looked up your particular vehicle and it acted like it was going to let me pay for it, which would make me think that it has the info you are looking for. Obviously I didn't want to pay for it so you will have to give it a go yourself to find out. I hope it's there for you! Good luck and thanks for using FixYa!

Jul 01, 2009 | 1988 Toyota MR2

3 Answers

Mr2 transmission

use only OEM Toyota trans fluid. If there is one lesson I learned with my MR2, its that Toyotas own trans fluid is the best. Yes, its a few dollars more, use it anyway.

As for your top, there is a product called Amazing Roll off. Its for boat canvases and its simply the best thing i've ever used. try it, you wont be disappointed.

Jun 19, 2009 | 2003 Toyota MR2 Spyder

1 Answer

MR2 after 2 mins of starting the smt light comes on.

it sounds like the clutch actuator is worn out.
The clutch actuator has 2 parts:
1. the clutch master cylinder
2. the clutch slave cylinder.

Try to replace the slave cylinder first, and if it is still not solving the problem, then try to replace the clutch master cylinder

Good Luck

Feb 06, 2009 | 2003 Toyota MR2 Spyder

2 Answers

My toyota mr2 front brakes are staying i need a new caliber

1.The fault can be differant places. Are your brakes spounge - Check for air in the line
2.Are they low - Needs adjustmemt
3.Are they hard - Booster problem or non return valve on the vacuum pipe.
4.Brake hoses (rubber ones) are old and is starting to block the flow of the fuide
5.Bad disc pads.
6.Chech the wheel bearings for play.

Jan 05, 2009 | 1993 Toyota MR2

2 Answers

2003 MR2 will not idle

Possible throttle control motor failure. Possible Idle Air Control Valve failure.
Is the "Check Engine" light on? Hard to determine without more info. Sorry.

Sep 14, 2008 | 2003 Toyota MR2 Spyder

Not finding what you are looking for?
2003 Toyota MR2 Spyder Logo

147 people viewed this question

Ask a Question

Usually answered in minutes!

Top Toyota Experts


Level 3 Expert

76846 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22246 Answers

Jeffrey Turcotte
Jeffrey Turcotte

Level 3 Expert

8575 Answers

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

Answer questions

Manuals & User Guides