Low Compression, fix without rebuild?

vex · 04-07-2009, 11:12 AM

Bandaids that may or may not help:

Get injectors cleaned and flow tested.
Use heavier oil
that's about all I can think of off the top of my head.

need RX7 · 04-07-2009, 01:10 PM

I must have got lucky. My S4 n/a has 202,xxx miles and I believe the comp was at least 85 psi last time I did a test and it starts in under 3 seconds any time.

It was alot worse when I got it though, but I did alot of work to it:
- Injectors cleaned and flow tested
- All new intake and exhaust manifold gaskets
- New injector plugs (mine were all janky beyond repair)
- Emissions removal (cats, rat's nest, air pump, EGR)

I think having the injectors cleaned will help alot with the flooding. I used Witch Hunter Performance, A+ service.

04-07-2009, 11:12 AM	#1
vex RCC Loves Me Not You Join Date: Jul 2008 Location: Influx. Posts: 2,113 Rep Power: 20	Bandaids that may or may not help: Get injectors cleaned and flow tested. Use heavier oil that's about all I can think of off the top of my head. __________________ The Official FC Radiator Thread My Project Thread: Cerberus CCVT Virginia Rotary Group

04-07-2009, 01:10 PM	#2
need RX7 Clean S4 Nutswinger Join Date: Mar 2008 Location: Sterling Heights, MI Posts: 485 Rep Power: 18	I must have got lucky. My S4 n/a has 202,xxx miles and I believe the comp was at least 85 psi last time I did a test and it starts in under 3 seconds any time. It was alot worse when I got it though, but I did alot of work to it: - Injectors cleaned and flow tested - All new intake and exhaust manifold gaskets - New injector plugs (mine were all janky beyond repair) - Emissions removal (cats, rat's nest, air pump, EGR) I think having the injectors cleaned will help alot with the flooding. I used Witch Hunter Performance, A+ service. __________________ -Ted -1986 Mazda RX7 Sport [DD/beater]: engine finally let go at 205k. parts car status. -1986 Mazda RX7 base [resto-mod project]: S5 n/a swap in progress.