Poltergheist Mazda
#1
Senior Member
Thread Starter
Join Date: Mar 2003
Location: Connecticut
Posts: 354
Likes: 0
Received 0 Likes
on
0 Posts
Poltergheist Mazda
My car is possessed. For a couple of days, it would start on one rotor and then after 20 seconds it would pick up the other. It ran well when hot. I was sure I had blown an apex seal. I did a compression test, by the book, and it was fine. After I put the plugs in the car ran fine, for a day. The next day it ran okay, but the idle was very rough, but not all the time, sometimes hot, sometimes cold. Yesterday I started it and it sounded like the engine timing was 30° retarded and it was smokey and rough but after a few throttle blips it cleaned up a bit. I took it around the block, thrashed it mercilessly, and it ran perfect when I got back and had a silky smooth idle. I should mention that I changed the plugs a month or so ago and I am POSITIVE everything is hooked up correctly...
What the hell is going on?? Could it be my oxygen sensor? The manual does not list this as a cause for any engine problems BTW. Would the TPS do this? I am certain the next time I start it there will be some completely different scenario so please give me your opinions before I set the thing on fire!
What the hell is going on?? Could it be my oxygen sensor? The manual does not list this as a cause for any engine problems BTW. Would the TPS do this? I am certain the next time I start it there will be some completely different scenario so please give me your opinions before I set the thing on fire!
#2
Banned. I got OWNED!!!
Join Date: Jan 2002
Location: east brunswick, NJ
Posts: 148
Likes: 0
Received 0 Likes
on
0 Posts
check timing, maybe crank angle sensor, i know you said it, but check spark plug wires arent crossed, check tps, it will drive car nuts if its wrong, and it the first thing i check with a faulty running car. lastly, what abot fuel? maybe that side's fuel injector is sticking? is it old w/ high miles? the tps and crank sensor are simple 2 minute inspections.
no, not o2 sensor, that only works at crusing speed, you can unplug it and you wouldn't really notice a difference.
no, not o2 sensor, that only works at crusing speed, you can unplug it and you wouldn't really notice a difference.
#3
Banned. I got OWNED!!!
Join Date: Jan 2002
Location: east brunswick, NJ
Posts: 148
Likes: 0
Received 0 Likes
on
0 Posts
check timing, maybe crank angle sensor, i know you said it, but check spark plug wires arent crossed, check tps, it will drive car nuts if its wrong, and it the first thing i check with a faulty running car. lastly, what abot fuel? maybe that side's fuel injector is sticking? is it old w/ high miles? the tps and crank sensor are simple 2 minute inspections.
no, not o2 sensor, that only works at crusing speed, you can unplug it and you wouldn't really notice a difference.
maybe AFM is taking a ****? that will also drive your car nuts if its bad
no, not o2 sensor, that only works at crusing speed, you can unplug it and you wouldn't really notice a difference.
maybe AFM is taking a ****? that will also drive your car nuts if its bad
#6
Banned. I got OWNED!!!
Join Date: Jan 2002
Location: east brunswick, NJ
Posts: 148
Likes: 0
Received 0 Likes
on
0 Posts
by coolant jacket, do you mean coolant is being introduced into the cumbustion chamber? if so then he could take his car to a local radatior shop or inspection place and tect the coolant for hydrocarbons. otherwise, i dont think there's any way to tell the coolant jacket is bad without engine removal and dissassembly
#7
SCCA Rookie
Join Date: May 2001
Location: Sterling Heights, MI
Posts: 1,936
Likes: 0
Received 0 Likes
on
0 Posts
maybe a stuck apex seal at first, I dunno..
and my O2 sensor isn't even sending a signal to the ECU and I run 13.7 @ 104 in my '90 TurboII.. so that's probably not the problem.
and my O2 sensor isn't even sending a signal to the ECU and I run 13.7 @ 104 in my '90 TurboII.. so that's probably not the problem.
Trending Topics
#8
Senior Member
Thread Starter
Join Date: Mar 2003
Location: Connecticut
Posts: 354
Likes: 0
Received 0 Likes
on
0 Posts
Timing is spot on. I thought about the injector, but intermittent failure? I don't think so. I will check the TPS and AFM. Thanks for the 411 on the O2 sensor....
#10
Super Raterhater
iTrader: (6)
Join Date: Dec 2001
Location: NY, MA, MI, OR, TX, and now LA or AZ!
Posts: 10,624
Likes: 0
Received 2 Likes
on
2 Posts
It's a bad coolant seal, it's probably leaking coolant into the champer which is preventig it from starting up (happened to my friends vert) on the rear rotor, and after a few minutes it fires up on that rotor and runs like a champ, he put a good 5,000 miles on it like that until it finally ate an apex seal If you want to save yourself some money during the rebuild, do it now, else, drive it till she dies!
#11
Senior Member
Thread Starter
Join Date: Mar 2003
Location: Connecticut
Posts: 354
Likes: 0
Received 0 Likes
on
0 Posts
I hope you are wrong! I just need to get one more year out of the rotary....just one more....I got the aluminum V-8 but I need everything else still to do the swap!!
#12
Senior Member
Thread Starter
Join Date: Mar 2003
Location: Connecticut
Posts: 354
Likes: 0
Received 0 Likes
on
0 Posts
I should add that the car has 23K on a rebuild, and has run flawlessly since it was put in. Hard for me to believe the coolant seal is already gone....
Thread
Thread Starter
Forum
Replies
Last Post
AMOC
SE RX-7 Forum
1
09-10-15 09:42 AM