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-   -   starting problems (https://www.rx7club.com/2nd-generation-specific-1986-1992-17/starting-problems-1088881/)

DaJedicc27 10-20-15 01:54 PM

Retested the cas at ecu harness using shorter jumper wires and they were good cleaned the grounds again and still no go

DaJedicc27 10-20-15 03:12 PM

Rechecked the cas at the ecm with shorter jumpers and it tested good cleaned the ground under the trailing coil and still no spark

satch 10-20-15 05:00 PM


Originally Posted by DaJedicc27 (Post 11981819)
Retested the cas at ecu harness using shorter jumper wires and they were good cleaned the grounds again and still no go

The engine ground?

DaJedicc27 10-20-15 05:17 PM

Yea

DaJedicc27 10-20-15 05:19 PM

I even hooked a jumper cable from the battery to the engine im talking to some one to get an esm so I can check that off the list.

satch 10-20-15 06:09 PM


Originally Posted by DaJedicc27 (Post 11981841)
Rechecked the cas at the ecm with shorter jumpers and it tested good cleaned the ground under the trailing coil and still no spark

There's no need for jumpers of any kind to ohm test the CAS at the ECU. One meter lead goes to pin 3G (White wire) and the other meter lead to pin 3H (Red wire). Reading is then taken. Then the meter lead from the White wire is shifted to the Blue wire at pin 3E and the second reading is taken. Plug is removed from the ECU for this type of test.

DaJedicc27 10-20-15 08:20 PM

I know my meter leads were to big so I just put a wire in each pin and just touched the wire ends with the meter

DaJedicc27 11-24-15 07:26 AM

I added a ground straight from the battery to the engine jusing an inch diameter copper wire and replaced the ecm still so start but sounded different. Don't know if it's because of the cold or weak battery so going to charge the battery and retest the trigger at the coils to see if I'm getting any spark

satch 11-24-15 08:28 AM

Can't remember, but did you ever try starting fluid?

DaJedicc27 11-30-15 10:20 AM

New fuel,fuel filter, new plugs, new computer green yellow wire is going from 0v to 4.96v. Fully charged battery new plug wires, primed the fuel system by jumping the wire on the right finder fuel pump kicks on. Engine 15 amp fuse is good, egr dues is good, will not start. Even used starter spray still will not start.

DaJedicc27 11-30-15 10:23 AM

Cas was good when I spun the engine over by hand could hear the clicking from the injectors and was trigger the coils

satch 11-30-15 10:56 AM

You need to verify spark at the lead coil. It's good that the G/Y wire is now doing what it's supposed to be but you still need to see if you have spark at the lead coil. And could you remind us if you ever tested compression of the engine.

Also, when using starter spray (1 to 2 seconds at most) it is good to use to deflood an engine but if the engine is flooded then you would want to deactivate the fuel pump as opposed to having it running. To kill the pump all you have to do is pull the circuit opening relay.

DaJedicc27 11-30-15 11:08 AM

I'm getting spark to all the plugs. Going to do a compressions test now. Should I pull the both plugs or just the leading

satch 11-30-15 11:17 AM

One plug on each housing at a time. And you might try deflooding the engine as previously mentioned (relay pulled). And make sure the plugs are dry.

DaJedicc27 11-30-15 12:20 PM

Checked t1 and t2 for compresion, needle barley bounced and i took out the check valve out.

FührerTüner 11-30-15 01:51 PM


Originally Posted by DaJedicc27 (Post 11997447)
Checked t1 and t2 for compresion, needle barley bounced and i took out the check valve out.

If youre not getting any compression on any face, youre probably doing something wrong.

lduley 11-30-15 03:21 PM


Originally Posted by Fuhnortoner
If youre not getting any compression on any face, youre probably doing something wrong.

Or there is something VERY wrong

DaJedicc27 11-30-15 08:54 PM

Thinking still had bad gas at the injectors when I pulled the plugs they were wet and smelled like varnish. So going to turn it over till I smell good gas then put the plugs in and see if she start in the morning.

FührerTüner 12-01-15 11:10 AM


Originally Posted by DaJedicc27 (Post 11997676)
Thinking still had bad gas at the injectors when I pulled the plugs they were wet and smelled like varnish. So going to turn it over till I smell good gas then put the plugs in and see if she start in the morning.

Try starter fluid.

satch 12-01-15 11:34 AM


Originally Posted by Fuhnortoner (Post 11997871)
Try starter fluid.

He tried starter fluid and it would not start which might mean the engine is severely flooded, the plugs are too wet to fire or the compression is just too low. He was advised to pull the circuit relay to prevent additional fuel from interfering with the deflooding procedure when using starter fluid.

RotaryEvolution 12-01-15 01:28 PM

take the valve out of the hose, not the tester itself.

DaJedicc27 12-19-15 02:42 PM

Plugs are good deflooded it with plugs out used A.t.f spoon the engine over to lube everything. Checked spark again shocked my self so it's good un plugs the fuel relay and spray starter spray in it turned it over and nothing. Hooked up the relay and still nothing

DaJedicc27 12-19-15 02:48 PM

I'm going to say compression is good because can't turn engine over with plugs in it. I tryed to test it again and doing it like a piston engine and nothing.


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