Microsquirt no start condition

maisonmays22

Member

Oct 25, 2019

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6

Amarillo Tx

Nov 12, 2019

#21

• Nov 12, 2019

• #21

I used a timing light while having someone cranking. And the spout connector is in place.

 

maisonmays22

Member

Oct 25, 2019

48

0

6

Amarillo Tx

Nov 12, 2019

#22

• Nov 12, 2019

• #22

Used a timing light while I had someone cranking the engine with the spot out. When trying to start i put the spout connector back in.

 

maisonmays22

Member

Oct 25, 2019

48

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6

Amarillo Tx

Nov 13, 2019

#23

• Nov 13, 2019

• #23

I used a timing light while I had someone crank the engine. And when im trying to start it, i put the spout back in.

 

maisonmays22

Member

Oct 25, 2019

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Amarillo Tx

Nov 17, 2019

#24

• Nov 17, 2019

• #24

So I followed all the rules, I installed my microsquirt and adjusted injector size and cubic inches, set timing to 10 with the spout in and not 180 off, calibrated all my sensors, checked all my grounds. I am losing my mind with this... it has spark fuel and air? where do i go now? Im getting ready to rip it all off and go get a carburetor because im not sure if it is worth all this trouble.

 

90sickfox

Wasn't a pretty sight...and I've got big hands

SN Certified Technician

Mar 2, 2015

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Nov 17, 2019

#25

• Nov 17, 2019

• #25

On my car I had to set the IAC setting to inverted for it to start. Post your tune file so folks can go over it. Also, a cranking data log file.

Usually, its something really simple.

I was there too. Was ready to take a hammer to my mspnp2. I even contemplated selling the car. My issues stemmed from the IAC setting and a bad computer ground wire near the battery. Steve a91what jumped in and helped me out big time.

Don't throw in the towel yet. Lol

 

maisonmays22

Member

Oct 25, 2019

48

0

6

Amarillo Tx

Nov 18, 2019

#26

• Nov 18, 2019

• #26

90sickfox said:

On my car I had to set the IAC setting to inverted for it to start. Post your tune file so folks can go over it. Also, a cranking data log file.

Usually, its something really simple.

I was there too. Was ready to take a hammer to my mspnp2. I even contemplated selling the car. My issues stemmed from the IAC setting and a bad computer ground wire near the battery. Steve a91what jumped in and helped me out big time.

Don't throw in the towel yet. Lol

Click to expand...

So what was your car doing before you inverted your Idle Air? Ill upload a data log and tune.

 

maisonmays22

Member

Oct 25, 2019

48

0

6

Amarillo Tx

Nov 18, 2019

#27

• Nov 18, 2019

• #27

Current tune

 

Attachments

• CurrentTune.msq

  117.6 KB · Views: 166

maisonmays22

Member

Oct 25, 2019

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Amarillo Tx

Nov 18, 2019

#28

• Nov 18, 2019

• #28

Data log of start attempt

 

Attachments

• 2019.msl

  450.6 KB · Views: 137

a91what

SendMeUrDataLog

10 Year Member

Apr 6, 2011

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Hillsborough county

Nov 18, 2019

#29

• Nov 18, 2019

• #29

I just reviewed the datalog from your other thread, I can see the rpm signal into the ECU thats a good sign. Now what i do see is a spike in the MAT air temps [thats the temperature in the intake manifold] this happens when the spark fires when the intake valve is open.. so I am going to have to assume it is a mechanical issue.

it happens at 9s in the log during the start attempt, some things to check are the valve lash and the firing order.

 

a91what

SendMeUrDataLog

10 Year Member

Apr 6, 2011

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Hillsborough county

Nov 18, 2019

#30

• Nov 18, 2019

• #30

FYI I am going to merge your 2 threads together as they are of a similar topic.

 

a91what

SendMeUrDataLog

10 Year Member

Apr 6, 2011

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Hillsborough county

Nov 18, 2019

#31

• Nov 18, 2019

• #31

Give me a PM and I can help you get this worked out over the phone.

 

90sickfox

Wasn't a pretty sight...and I've got big hands

SN Certified Technician

Mar 2, 2015

6,945

5,816

213

Nov 18, 2019

#32

• Nov 18, 2019

• #32

My IAC was not opening correctly. It was opening too much during start up.

Double check the firing order. Make sure it's the HO order. My balancer was also incorrect in my first start attempt with MS. I checked with a piston stop in the number 1 plug hole and market the balancer.

There's really only one way for a heat reading in the intake. There's fire getting in the intake. Firing order can do this or a valve being too tight and hanging open.

My advise is to PM Steve. He walked me through all this stuff too.

Don't panic...stay calm. It'll work.