JBrandtRacer

MR2 Engine Smoke Power Loss

Hey, I'm kinda freaking out. My 2004 Toyota MR2 with a gasoline engine is acting up. The check engine light is on, and it feels like I've lost a ton of power. Plus, I'm seeing smoke when I accelerate, which is super embarrassing and definitely not normal. I've only got 37312 km on the clock! Any ideas? Could it be something simple?

The 2004 Toyota MR2 is experiencing engine smoke, power loss, and an illuminated check engine light. The issue is likely due to a defective PCV valve, which affects the crankcase ventilation system. The smoke color can indicate whether the problem is related to oil or fuel, with bluish smoke suggesting oil burning. The recommended solution is to have the vehicle inspected and repaired by a professional, as diagnosing and fixing the PCV valve can be complex without proper tools.

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4 comment(s)

Dude, that sounds familiar. I had something similar happen with my MR2. Have you checked your ventilation system, specifically the PCV valve? A malfunction there can cause all sorts of weirdness with emissions and engine performance. Is the smoke bluish or more black/grey?

PCV valve, huh? I'm no expert, but I googled it and it seems connected to the crankcase ventilation. Where is it and how would I diagnose if it is broken? What do you mean, bluish or black/grey smoke? Sorry if I sound ignorant...

Okay, no worries! Knowing the smoke color helps narrow things down – bluish often means oil burning, while black/grey suggests fuel issues. Since you're seeing a check engine light and power loss and smoke, and I had a similar combo, I'd really lean toward the crankcase ventilation valve being defective. Honestly, though, diagnosing it properly can be tricky without the right tools. I ended up just taking mine to a workshop to fix it, as I didn't want make it worse. It's probably the best option unless you are an experte.

Thanks a lot! Seeing it could be the crankcase ventilation, I brought the car to a workshop. Turns out it really was a defective PCV valve! 360€ later it's fixed, but at least I know what was up with it. I really appreciate the help!

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TOYOTA

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MR2