Hey guys,

I recently did the non sequential conversion to my 94 RX7. The car has been off the road for approx 3 - 4 weeks. I completed the conversion last week. Got a new battery for it, put it in this morning. Double checked all the lines, wires etc. Put coolant and oil in it. Went to start the car and it only turns over. Doesn't start up

I've tried to start it about 6 times, no longer than 10 seconds each time. I primed the car by connecting the ground and fuel pump wire in the diagnostics box. I don't know why it won't start. I'm getting spark as i pulled a lead out, put a spare plug in the lead, earthed it out whilst cranking it and it was sparking.

I'm 100% sure I put the fuel lines on the correct nipples. Does anyone have a fuel line diagram just in case?

What's the chances of my 4 spark plugs shitting themselves therefore requiring new plugs?

What else can this be? It was driving fine before the non seq conversion..

All help appreciated

 

I've been researching for the past few hours. From the sounds of it, my engine may be flooded. Therefore tomorrow I will attempt to de-flood the engine by removing the EGi fuse, taking out the plugs, cranking the engine and reinstalling new plugs..

If this procedure doesn't work, what else could be the cause? Thanks

 

Well looks like you are on the right track. Air, Fuel, and Spark. Make sure you don't have any vacuum leaks, your MAP sensor is connected, and that your fuel hoses are on correctly. Usually without modification the hoses only fit one way. Make sure you don't have the return and delivery lines crossed. Your plugs can foul from massive floodings and could require new ones.

Do the deflooding procedure and install new plugs. Sometimes it helps to manipulate the throttle while starting.

 

I've checked all the vacuum hoses and none are leaking. Also the MAP is connected.

About my fuel hoses, as I did the non sequential conversion, I removed the whole vacuum rack therefore ran new fuel lines from the firewall connections straight to the fuel nipples. I disconnected the fuel line going to the fuel pressure regulator and when the pump is on fuel comes out of the FPR. I believe this is correct. Fuel gets fed into the fuel nipple closer to the front of the car and the return connects to the FPR.

I took out a plug this morning and it looks fouled. It's quite black and looks like it's been flooded. I will attempt the de flood procedure tonight and let you know how I go.

Thanks alot

 

Grrrrr I'm spending more time fixing this thing rather than enjoying it!

I got 4X new plugs. Did the whole deflood procedure and it didn't start. Called my brother over, he was in a rush so he couldn't stay long. He is a qualified mechanic. He checked it over for me and noticed that it's not getting spark. When I tested a lead yesterday I could've sworn it sparked. But he just showed me all 4 and none were sparking.

So the new problem is "No Spark"

The main ignition wiring loom is connected which then splits into 3 plugs. Those 3 plugs then connect to the coil packs. All 3 plugs are connected to the coils and then the main harness is connected.

Why would I be getting no spark?

I'm lost as to what to do next..

 

The car was running fine before the non seq conversion, after the conversion I'm now getting this problem. So I'm a bit confused. I've double checked all the wiring and everything is connected..

 

What fuses/relays could cause this problem?

All help and advice highly appreciated

 

Did you put the EGI fuse back in after the deflood procedure?

 

Did you also make sure to ground the Coil harness if it has the ground wire?

 

twinsinside: Yes, I put the EGI fuse back in the car after the deflood procedure.

twinturborx7pete: I checked the grounds yeterday. There's the little ground wire that bolts to the left of the middle coil. It' held on by a 8mm nut. Then underneath the coil box I have 2 ground wires bolting to the engine block. Which in order give an earth to the coil box itself. I have grounds going from the UIM to the firewall etc..

Quick question, when I put the key in the ignition and turn it all the way, I never hear the fuel pump? Even when I turn it to the last click, I don't hear it priming or anything. But I believe my fuel pump works because I put a cable in the diagnostic box, which connected the Fuel Pump wire to the Ground Wire and I heard it running then..

 

Is it possible for my coils, leads etc to just **** themselves from sitting in the garge for 3 weeks? The thing that gets me is that it was fine then all of a sudden it decides it doesn't want to start. The non sequential conversion shouldn't really effect the start up of the car. Unless I've missed something and forgot to plug something in that's a vital part. But I've checked every plug and everything seems to be connected. I pulled the UIM off last night and checked everything so yehh bit confused.. I might try degreasing everything and sanding all the grounds. I'm lost for ideas..

Also, can anyone confirm if the fuel pump should be priming when the ignition is switched to 'ON'?

 

Lol, this statement is funny. You would be enjoying it if you had left it alone, I rather like the sequential and see no reason to mess with it until an entire swap is needed. I hope if you start to hate the 7 you at least put the blame where it belongs and don't try to bash them for being "unreliable"

 

It should prime when you turn the key to the "on" position. Usually you can't hear the stock pump too well, but if you remove the carpet and stuff and try to listen you should hear it. Double check all of your relays, its possible to have burned one out. I'd do that first, then get a multimeter and check for voltage at the pump and the coils per the FSM.

 

Well, I'm a idiot lol. I checked the car over for 2 hours. Noticed the plug for the Crank Angle Sensor was stuffed and not connected properly. Re wired the plug and everything is fixed. The car is alive lol.

limepro: There's nothing wrong with RX7's. They're my dream car and have been for many years. Reliable, well that depends on the owner and knowledge.. I love the RX7's, best car ever made! Don't get me wrong. Wouldn't take a lambo or ferarri over a RX7

 

I was just making a reference how most problems are owner created problems that they then blame on the car giving it a bad name lol. Glad you got it fixed, now go enjoy it!

 

Glad you got it running.