I guess i'll give a quick experience with low compression.
January 2014, I found a 2007 MS3 at Achilles Mazda for a good price (with warranty still on it). Went to test drive it with my uncle, feel in love with the car. My uncle drove it, did whatever tests he had to do while driving (he's a retired mechanic) and said it was alright. Bought the car.
My first mistake was NOT requesting a compression test, nor reading up more on what to look for when purchasing the vehicle. It wasn't until after the car was in my possession I started reading up more on the issues with the engine on here and mazdaspeedforums.com… also bugging/texting the hell out of a fellow TM3 member to ask questions and learn more lol.
Since i've had the car, i've had my turbo replaced, vvt replaced, MAF sensor replaced, trailer arm bushings replaced, and a few other parts. Even after all that, I never felt my car was performing 100%.
Fast forward a couple month (not to bore you guys), and after 2 not so great compression tests.. .I purchased my own compression kit, and me a phil did a third test on my engine. .. the numbers from right to left were 180 - 160 - 130- 150. Not great at all.
Took my car to the dealership, and explained to the service manager (very nice guy!) the issues I was experiencing with my car. He said leave it with him for a few days, while they have a look. After a couple of days, I got a phone call saying that my piston rings were worn, and that i needed a new engine. Luckily for me I still have extended warranty on the car, and mazda ended up replacing my whole engine.
For anyone looking to purchase this car, please learn from my mistakes… read up, ask questions, read more, ask more questions and do a compression test before purchasing a MS3. It will save you a lot of headache.
Last edited by Prezi; 05-29-2014 at 08:03 PM.
Mspeed Tuned... .Prezi
You had a good outcome
I was driving down the road and the engine died.. i visually checked my compression and it was 0-190-190-190.
Hole In Block Tuning! I'll give you HIB.
2010 MS3 Black395whp/386wtq
| Molnar Rods | CP-e Stage 2 Pistons | Much Head Work | ATP GTX3076 | Tial 38mm EWG | HTP 4 Inch Intake | BSD | Passenger and Rear MM | Denso ITV22's | OCC | Ultimate Racing TBE | Tredstone TR8C FMIC | Tial BPV | Autotech Internals | Grimmspeed ECBS 3 port | Te37 Volks| 245/45/17 Dunlop zzi tires| Cobb AP Self Street Tuned | Sonic Tuning CO's | stoptech breaks and slotted roters |
No way...you blew up?
- 2021 Porsche Macan GTS -
- 2016 Lexus NX200t F Sport -
- 2010 Mazdaspeed 3 Black Mica - SOLD -
Haha that was 2 years ago, when I blew the stock motor.
Picked up an 07 speed. Had the compression tested today and it came out 175-175-175-175. Weird. Seems too good to be true
Likely kept stock.
shift8 (01-09-2015)
ricola (01-09-2015)
a year ago my #s were #1 180 #2 180 #3 183 #4 191...this is before Downpipe and targeting 18psi.
Did a test last weekend and got #1 170 #2 172 #3 171 #4 176 (with DP and targeting 20 psi). Not sure if the drop in compression is anything to be concerned about since its pretty even across all cylinders. Engine has 91K on it.