Diagnosing failure to start on a 2001 Honda Prelude SH, still in brainstorming phase. Leaving out list of other thoughts because this question is specifically about this possibility, rather than generally troubleshooting the start failure.
A few weeks ago, on attempt to start, the engine started, remained running normally for about 10 seconds, slowly dropped RPMs, then stalled. All further attempts to start have failed, leading to cranking but no start at all (note: battery is a non-issue, charge has been maintained through start attempts via charger/jump attempts), car has been garaged in frustration since.
At the same time, I've had a long-standing (and rather severe, as of late) coolant leak. When examining more closely I pulled the air filter and noticed about half of it was covered in dry coolant (the coolant leak is near the intake filter). Filter and surrounding seals are in otherwise good condition. It is difficult to tell if it made it through the filter due to the highly visible bright green staining the white filter. A fresh filter did not solve the issue which rules out a clogged filter obstructing the airflow.
I have two questions:
- Can coolant actually make it through an air filter?
- If it does, could it somehow lead to a situation where the car continues to fail to start even after the coolant → intake source is corrected? If so, how, and what would have been damaged?
I am trying to determine if I should leave this on my list of possibilities, or scratch it off.