ECMlink Crank but no start

4gsx63 · May 26, 2026

I got the car started and ran fine after a few months of sitting on old 93 octane. It made a few blocks down the street and died. I couldn't get it to start and had to get it towed.

Things I have changed since but still no start:
Sparkplugs
Fresh 93 octane
MPI relay
Transitor
CAS
Even tried a fresh set of 2150s (from current High Z 1650s)

I couldn't figure out what else is wrong. It was running fine up into that point.

I don't see an option to upload the log.

Any help is greatly appreciated.

diambo4life · May 26, 2026

What's up bro. Long time no hear. Start with the basics. Don't just throwing parts at it without troubleshooting. You will end up chasing your own tail. Have you verified you have spark? Are the plugs wet after cranking?

luv2rallye · May 26, 2026

Yes, check basics first:
1) Spark: Remove all plugs. One at a time, reconnect high voltage cable to one and hold plug threads against cyl block (wear rubber gloves and stand on rubber mat while doing next step). Have someone turn engine over and watch plug for actual spark present. Repeat on rest of plugs.

2) Fuel: Check if plugs wet when removing them. Measure fuel pressure at rail with gauge (fuel pressure should stay for days). Make sure FPR is not leaking.

3) Compression: Check all cyls with compression gauge.

4gsx63 · May 27, 2026

diambo4life said:
What's up bro. Long time no hear. Start with the basics. Don't just throwing parts at it without troubleshooting. You will end up chasing your own tail. Have you verified you have spark? Are the plugs wet after cranking?

Hey bro, it’s been a minute. I appreciated you chimed in on this.

I have sparks and fuel. Plugs and top,of pistons are wet after cranking.

What could’ve caused the car to suddenly runs lean and just died?

luv2rallye said:
Yes, check basics first:
1) Spark: Remove all plugs. One at a time, reconnect high voltage cable to one and hold plug threads against cyl block (wear rubber gloves and stand on rubber mat while doing next step). Have someone turn engine over and watch plug for actual spark present. Repeat on rest of plugs.

2) Fuel: Check if plugs wet when removing them. Measure fuel pressure at rail with gauge (fuel pressure should stay for days). Make sure FPR is not leaking.

3) Compression: Check all cyls with compression gauge.

Hi Gary,

I’m getting sparks and fuel. Will check on compression next but I’m pretty sure it’s fine since the car was running fine before.

luv2rallye · May 27, 2026

Buy or rent a compression tester. How to use: https://www.dsmtuners.com/threads/compression-and-leak-down-testing.338152/

diambo4life · May 28, 2026

Is this a MAF or speed density car? Are you getting the appropriate airflow signal? Verified ignition timing?

4gsx63 · May 30, 2026

diambo4life said:
Is this a MAF or speed density car? Are you getting the appropriate airflow signal? Verified ignition timing?

Speed density ECMLINK. I tried to upload a log but didn’t see the option.

steve · May 30, 2026

4gsx63 said:
I tried to upload a log but didn’t see the option.

Log files are uploaded the same way as photos just select an .elg file when you click Add Photos.

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ECMlink Crank but no start

4gsx63

diambo4life

luv2rallye

4gsx63

luv2rallye

diambo4life

4gsx63

steve

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