2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

1988 RX7 Won’t Stay Running

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Old Apr 11, 2019 | 02:45 PM
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1988 RX7 Won’t Stay Running

Hello all! Total newbie post here, but I’ve been searching and searching and I’m not confident I’ve solved my problem.

I just purchased a 1988 RX7 this week. Supposedly had been running a few months back before an engine fire (bad pulsation dampener) and had been fixed.

The Problem: The engine fires up (see video), but won’t stay running or idling.

Attempts at a Solution and Tune Up:
1. New fluids
2. New fuel pump
3. New air filter
4. Checked for Vacuum leaks
5. New battery
6. Jumped the new fuel pump, wiring and pump are good

Guesses:
1. Vacuum Leak from BAC or elsewhere
- I took the yellow tape off and the car wouldn’t even fire, I added it and it will fire up and run with the throttle being pulsed. So, vacuum leak?
2. Low fuel pressure (hence the new pump, which is good and I can hear running)
3. Something else entirely.

Ive attached pictures of every disconnected hose or wire I could find, most leading to dead ends or being overflow hoses. Any help would be appreciated, I’m moving tomorrow so I was hoping to have this actually running! Thanks all!

Video (YouTube):
Attached Thumbnails -391863e0-7e48-4461-afd1-d9e72f53a880.jpeg   -22353c33-0208-4463-a326-1245ffc88e33.jpeg   -ba28d530-1c06-45a8-b217-3d0e5c5b3c9e.jpeg   -4cddd2ad-4a9c-4509-8143-c6f7564f8f73.jpeg   -b04c26f6-16dd-403e-a3b7-f6d67d98e87a.jpeg  


Last edited by RogersSteve; Apr 11, 2019 at 02:55 PM.
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Old Apr 11, 2019 | 08:37 PM
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Bump. Just tested the AFM, voltages seem to be fine.
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Old Apr 15, 2019 | 12:52 AM
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There should be a hose connection from the yellow taped pipe behind the throttle body, to the yellow taped outlet on the air intake. This feeds air to the bac
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Old Apr 15, 2019 | 12:56 AM
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The hose down below near the exhaust manifold is for the EGR I believe. Connects to the backpressure tube coming off the cat. Keep it plugged since the EGR probably doesn't work anymore anyway.
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