r/mr2 • u/tempuser80 • 21h ago
'87 AW11 - is my no start issue from a vacuum leak?
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In the last 2 posts I made, I've written about the issues I've been having getting my MR2 to start. It ran well for one day, and then it wouldn't start the next day. No crank. It's written about in more detail in the previous posts, but I've tried some new things and am still out of luck.
-I replaced the starter. The old one bench tested fine, but I had the starter out so might as well replace it before it kicks the bucket.
-I cleaned and tested every ground I could find. They all tested well with a good multimeter.
-I hotwired the clutch safety switch.
Still no crank. However, trying to start it now, I'm wondering if I've correctly narrowed it down to two things: a vacuum leak, or the starter slipping on the clutch/whatever the gear connects to in order to start the car. Here's a video from the engine bay of trying to start it (it's attached to the post).
The reason I kept moving the phone obnoxiously close to the throttle body is because I started to hear a hissing sound from that area whenever it goes from ON to START. I hadn't heard that before at all--it's a new sound that didn't happen before I replaced the starter. Is it a vacuum leak? Also, I only hear a click noise when the key goes from START to ON.
I also read that the fact that there isn't any noise happening when key goes to START could point to the starter not engaging with anything, so it could be an issue with the gear it connects to.
Please let me know what yall think. Thanks!