I have a 86 with 40k on the rebuild and while i was moving my friend was driving behind me. He had the stereo up too loud to hear the oil buzzer going off. It blew a oil cooler line. I got some lines fabricated and fixed that problem. Once started everything seemed fine, untill any throttle was induced. Under feathering of the throttle( just resting shoe there) it reved fine nothing unusuall. under deep throttle pressing there is a pinging noise and a noise similar to a 4 cylinder engine missing on 1 or more cylinders.....When driving the car there is a major loss of power and unless you feather the throttle there the same pinging and the feeling like it is missing on one or more sides of one of the apex's. I am wondering if anyone has any input or ideas? Now he doesnt know how long the buzzer was going off but the car still had the full 80~100psi on oil and an normal engine temp, also not pinging when he stopped it. oh yeah it also blows white smoke now when you drive but only when it pings???????

 

help???

 

Compression test...STAT.

 

Those are the signs of rebuild. Like he said, do the compression test.

 

where can i go to get that done? or if i do it myself what should i expect psi wise?

 

Pull one rotor spark plug, crank the car over - note the PFFFSSSHHHT sound.
Do this to sound it at least 3 times.

Put back the spark plug.
Pull a spark plug from the other rotor.
Repeat above.

Do all the PFFFSSSSHHHHT's all sound the same?


-Ted

 

Classic symtoms of switched around spark plug wires.
Trace & reconnect the leading (front) coil pack to leading (bottom) plugs.
Then do the same for the trailing wires.

 

bump, i tried the wire swap hard to start but ran about the same???

 

oh yeah,... im not sure if anyone knows if this could have a friggin thing to do with it but, I went ahead and did a battery relocation to the inside of the car behind the pass seat where the 2+2 seat would go. We re-ran the cable straight to the starter and used a yellow buttend connecter to connect the other wire that goes to the main power distb. area. Could this be the problem of the pinging due to lack of efficent spark?

 

mm,.. kinda sounds like a spun bearing maybe?

 

I hate to think you're probably right.

No engine can run long on zero oil pressure without galling the bearings.

Time to shop for a J-spec?

 

Is the timing set properly? If it's way out of whack (like a whole tooth off) you could get some interesting problems.

-=Russ=-

 

there was normal oil pressure and engine temp and still ablut 2 quarts of oil that drained in the driveway. but if there was no pressure id think the same thing!

 

anyone know what frigin size are the spark plugs "socket wise" and if they are fowled can i get them at oriley's or pep boys?

 

13/16....
make sure they are all firing, check your timing, check your compression... and did this all happen right after you were too lazy to put more oil in?

 

hey smartass did you even read the top post????? it blew a oil cooler line on the freeway!

 

Thanks to everyones ideas, but the WINNER IS "SureShot" he suggested that the wires are on the wrong plugs. That was causing a ignition 90degrees crank shaft rotation too soon causing the ping all the way on the opposite side of the housing. Everything is back to normal and nothing seems wrong. Thank God!!

 

How does an oil cooler line fix have anything to do with the spark plug wires?


-Ted

 

I was wondering the same thing?

 

because we did a battery relocation while we were in there. The battery box was dry rotted out. the tape came off one of the wires for the lead coil and they got reversed.....

 

Again, I ask...what does a battery relocation have to do with the spark plug wires?

Did you swap the leading spark plug wires???
If so, that wasn't your problem.
You do know the leadings both fire at the same time, right?


-Ted

 

Did you swap the leading spark plug wires???
If so, that wasn't your problem.
You do know the leadings both fire at the same time, right?


-Ted[/QUOTE]
Im pretty sure that the rotors "apex's" are 180 degrees off from each other. Anyone else agree with me on that? and when i switched them the problem was completly gone.

 

So did you swap the LEADING spark plug wires???

Yeah, you're right - the rotors are 180-degree out of phase.


-Ted

 

Does the term wasted spark ignition system mean anything to you? Are you sure you know whihc plugs are leading? There the bottom ones,.. if you switched the top ones youd have a problem,.. the bottom ones dont matter.

 

yeah it was the top ones. She runs like a beast now got 2 outa 3 cats "not my doing" the small ones and 2.5 straight pipes after the y. really notice a difference thru all the rpms. gonna do an intake mod and check if my 5&6's are opening because i really cant tell if so