1987mazdarx7

well i just did a quick compresion test on my 1986 rx7 na. it was about 15 psi. lol. my plugs were wet and i did this i also could not find the coil over wire. any help would be appreciated. is my motor done or do i need rings or is there a quick fix etc. dont reaslly know a lot abou the rotory engine but would love some help.

bigdaddyp

First of all, 15 is incredibly low, I would say that if this was an accurate reading, it is toast. Coil over wire? Also, if your reading is that low, rings wouldnt be an issue seeing as this isnt a piston motor. You would be looking at apex seals probably being the cuprit. Search compression test, make sure you are doing it right.

Mankdrake 2661

iTrader: (8)

If you are truly reading 15PSI then yes I'd say your motor is done!

88turbotime

And your engine doesnt have piston rings.

unW7WZ

hmm, 15psi. That isnt saying much. I would say search, as said above "compression test" is a good start. I would also say, do a lot more reading on this forum. ... Don't worry, though, there are plenty of people here that can help, but you have to do your part and read up. Lots of posts on just about every subject!

Good luck, and don't be discouraged by plight!

papiogxl

iTrader: (6)

reminds me of a time when Bheiman and I wee around a bunch of ricers and they said my car sounded weird. He said the rings were blown, then he started asking "anybody have piston rings for an '88 RX-7", They then (seriously) told him to go to ebay and they had just seen some on there.

fusion-turbo

Maybe you overlooked something silly.... sayyy completely pulling out the valve on your compression tester so that the air leaks out and barely gives you a reading (ask me how i know). So yes, search, and google the words "rotary engine" or something of the like so you can find out what kind of motor you have in your car and how it works. Knowledge is key

1987mazdarx7

i will try again after school and i will give you another reading. thanks alot for all teh help guys. by the way.if this was true what is the easyist way to fix this ie: new motor, apex seals? what are these and how much are they, are they hard to install for a n00b.

thanks again guys

1987mazdarx7

also when i did my compression test it smelt really bad and there was a lot of smoke. is this normal?

riverzendz

Read the 2nd Gen archive and FAQ. It will answer a ton of questions for you, some of the same you are asking now.

You ask if smelling really bad and smoke is normal? What did it smell like? On any car, piston or rotary, is smoking normal? What do you think?

FAQ

2nd Gen Archive

Sigh.

Icemark

Title of the thread edited. Please use real titles that describe the problem when creating threads

1987mazdarx7

fixed my compression problem, i think. it was around 80 to 95. for each plug hole. the car is still not starting though. its roling over but i wont start. any other ideas?

gear_grinder

iTrader: (4)

not starting, compreassion check, ignition, fuel are the other two.

1987mazdarx7

the compression is between 80 and 95 psi. there is $5 supreme fuel in it and i dont know how to check the ignition. any other i deas or anything. the plugs are getting spark. and there getting fuel because there are wet when i take them out. i tried to deflood it and it did nothing. also on the fuese panel under the hood by the strut tower there is a egi fuse and another one right after it then a blank then its missing a fuse then there two more fuses. could this be my problem. also if it is i think its the main fuse and its 80 amp but i cant find one anywhere. ideas?

mort2002

iTrader: (1)

5 bux of premium fuel doesn't get you very far anymore

1987mazdarx7

no but it should still start on that easilly

arghx

iTrader: (3)

It may still be severely flooded. You need to either put a small amount of automatic transmission fluid into the lower plug holes, or you can try to push start the car and pop the clutch.

1987mazdarx7

auto trani fluid in the lower plug holes? i tried to put oil in all the plug wholes to reproduce the compression and then my friend tried to put gas in the plug holes to try to get the plugs to fire but that didnt work. push starting is not an option. not where i live. i just did with my other car tday and i almost got killed. its like a highway. other options?

Icemark

fuses are listed in the FAQ for FC sticky thread found at the top of this section.

that is the absolutely last thing you would want to do!!! Don't let your friend near your car again.

Sideways7

iTrader: (7)

Yeah. Your car already has too much gas in the combustion chamber, so why would you want more? Do the advance deflooding procedure (involving ATF in the plug holes to help compression) a few times and see if that helps. There is a procedure listed in the FAQ sticky. You might need new plugs they are super fouled. It might not be a bad idea to check for spark while your at it, just in case.

1987mazdarx7

the plugs do have spark so there still fireing but i will try the deflooding procedure. what is ATF?

riverzendz

A utomatic T ransmission F luid

1987mazdarx7

thanks guys i probly seem like a moron but i'm only 16 and kinda new to it. i appreciate all the help because i really want to learn.

thanks again.

My5ABaby

iTrader: (7)

Put oil, not ATF. *sigh* You know better Sideways7.

RotaryEvolution

iTrader: (30)

how long did the car sit before this?

that bad smell could be old fuel, by putting in only 1 gallon you probably just plugged up the pump sock or fuel filter and just mixed fresh gas with some old crappy fuel that has turned into paint thinner. pump some fuel out and smell it, if it doesn't smell much like fuel anymore then drain the tank out completely, flush it out and fill it full with new fuel then you will need to focus on the fuel lines and cleaning them out and replacing the fuel filter.