Turbo 2 problems

[rupertbear]

I collected up my newly purchased 1990 Turbo 2 Convertible yesterday and drove it home.

All was well for the first 30/40 minutes driving then it was missing dreadfully for the rest of the three hour journey. I have a stiff neck today following my nodding dog impression.

Now I know that this could be anything from dirt in the fuel lines upwards but I thought I would ask if there were anything common with RX7s which cause this symptom.

(Waits in suspense for someone to say \'it needs an engine rebuild\'.)

Background: It\'s only done 65K over 16 years and has already had one replacement engine from Hurley Engineering in 1998 at around 40/45K.

Recent years it has been a summer weekends only car then not used at all for the last 12 months.

All suggestions greatfully received.

[Brett]

Sounds like a fuelling/ignition problem rather than a death nell for the engine.
Check your earthing points in the engine bay and near the ECU (passengers foot well) then check the leads and plugs.

[grinder]

have you put some new fuel in it ?

check the plugs and wires

check earths

check air filter

just give it a quick look over - does everything seem in place ?

Stu

[rupertbear]

Right, I checked plug leads on the road yesterday and have had a look at the plugs today. Plugs don\'t look brilliant and there may be a cracked insulator so they are at the top of the shopping list. I\'ll also be getting air and fuel filters.

Will look at earths on next visit to the car.

Thanks for the replies, I\'ll keep you posted.

[rupertbear]

PS - Fuel - Yes, that occurred to me yesterday, ran it down and filled up, no difference.

[Grizzly]

Does it do it all the time (idle too)

If so, take your EGI fues out and the Top rear plug and turn it over (listen to the noise it makes)

Now replace thet Plug and remove the Front top Spark Plug and turn it over, They should sound the same (Same Volume and Spacing)

Not to sound like the voice of Doom but you want to Make sure the Compression is good before you look for faults.

If thats good You want to Sevice it well, New Plugs leads Filters etc still no joy Check out the Coil packs etc. Could even be a Loose plug.

[Grizzly]

When it started doing the Missing thing how where you driving it?

Fast
Slow
Motorway Crusing or Built up area?
Lots of Throttle or Not alot?

Also has the car been stood or had any work on recently.

[rupertbear]

Grizzly said: Does it do it all the time (idle too)?

No, not on idle, only when driving.

Is that bad?

[Grizzly]

The Big question is What does it sound like on Idle???

Does it sound like a Lawn mower? and is one set of Plugs (Front or Rear) realy wet and the others Dry?

[Grizzly]

Grizzly said: Does it do it all the time (idle too)?

No, not on idle, only when driving.

Is that bad?

Ok, so is it smooth on idle and about 750 or a little higher?

[antnicuk]

does the engine shake or is it smooth,

[Grizzly]

I have to say if it was me.

First i would Compression test it.

[rupertbear]

I had just collected it,  60 on A roads, generally starting to use the acceleration as I got used to it, a few bursts up to perhaps 90. It was after that the missing started.

Car has been standing for about a year, previous owner took it out for an MOT last week.

[Grizzly]

Grizzly said: Does it do it all the time (idle too)?

No, not on idle, only when driving.

Is that bad?

When you loose an Apex seal or blow your Motor it will miss Badly all the Time Including Idle.

Rotarys that loose compression on one of the two rotors usaly sound like a Lawn mower on Idle and are quite hard to start.

They will do things like Drink masive amounts of Fuel.
Pop and bang and genraly not like running.

But there is a fool proof way to determin if you have a bad motor by doing this-

take your EGI fues out and the Top rear plug and turn it over (listen to the noise it makes)

Now replace thet Plug and remove the Front top Spark Plug and turn it over, They should sound the same (Same Volume and Spacing)

If an Apex has Gone it will Make a Pshhh noise then a long delay then another  , if its gone Bad it just won\'t make any Noise. A good Rotor will have even loud Pssh noises quite close together and the Front and rear should sound fairly simalar.

Do this test ^ and Come back and tell us how you got on.

[rupertbear]

Lots to investigate, thanks for all the input.

I\'ll be back!