jantore

My seven is sick and i could need som answers.

Here's the thing. I was at the track on monday. Doing my usual stuf like passing every car there . Then all of a suden the enging gets rough and get the sound of a bad spark plug. I take them out and i se that the rear Leading plug is all wet. I check for spark on all plugs and the Rear Leading plug won't fire. Moved it to another coil and still wont fire. So i think it might be a dead spark plug.

So i change it and the car starts up at once. But it's still rough and it idles at 600rpm with a vacume of -8 psi. But the engine do not shake at all. It's completely still. So i think no broken apex seal.

Then when i get home i check the compression and it's 60.60.60 on the rear rotor and 120.120.120 on the front. And the IC pipes and the upper manifoild is full of oil. Like it's blowing oil trough the breathing lines and to the airfilter.

Then i talk to a freind of mine that is very good with rotary engines and we talk alittel and he tells me about a problem he had this weekend. He had the same problem, no spark on the rear leading plug. But his engine was fine. And he traced it back to a bad leading coil. That it was giving sparke some times. And he told me that he was loosing boost. The same thing happend to me. Before this happend. I had to turn up the boost. Like setting it to 16 psi and getting 14.

So could a faulty rear leading coil do that the rear chamber get cloged upp, so that springs and so on get stuck, and get compression ratio of 60.60.60 all over?

Cause nromaly when a seal breaks u get somthing like 90.0.0 or 90.10.10. Not an even compression all over.

Could the ATF trick save my engine. Please give me a response.

Sincerly
Jan-Tore Pedersen

DaleClark

iTrader: (55)

I think your rear rotor is gone, unfortunately - those kind of compression numbers just aren't healthy. There's really not going to be any magic tricks you can do to pop it back - ATF can free up stuck seals that are stuck due to carbon, but that's typically when an engine has sat for a very long time and has been babied around down - seals don't stick at full throttle on a race course.

What exactly the problem is can only be answered by opening the engine up.

Good luck!
Dale

jantore

Oh i forgot somthing the engine is brand new. With Hurley 2mm seals. And was just finished run in about 500 miles ago. Idle and vacume was good until this happend. Vacume was at a strong -17 psi.

But im preperad to take it out again. Should only take me about 2 hours to have it out. A good thing to be single

JT

DaleClark

iTrader: (55)

Man, that stinks that it's a brand-new engine! But, compression tests don't lie.

Good thing is I've heard the Hurley seals are somewhat softer than stock, so they don't chew up the rotor housings when one breaks.

Dale

dubulup

haven't heard too many good things about aftermarket seals...

jantore

Yeah hurelys are good. I broke 2 3mm ones alittel over a month ago. Due to a damn fuel cut. So i thought every thing was going to be good this time, but nope. Still problems.

Car is not fully tuned yet. It's getting alittel to much fuel. But no fuel cut or knocking.

But im hoping it's some stuck seals. I think mye Leading 2 coil is fucked. Since i have had same symptoms as when u have a dieng Leading 2 coil.

So we will se in a couple of days if it works or not.