Engine is hard to start

sindre · Post by **sindre** » Tue Sep 05, 2006 1:26 pm

driving with MS-II v.3.0 on a audi 10v turbo ignition and fuel

when it's cold it starts okay, but when it's warm so that the cold start enrichments not is there I have to turn it a loty before it starts. Is there somwhere I can give it more fuel to start(cranking)?

I also have trouble with driving on cold engine, it wont have high rpm, so that I use verry long time to get to driving speed in the morning.

And one last question... When the turbo spins but the engine will not have it, shall I tune ignition advance up or down?
(i get pressure, but no accelleration....)

tebriel · Post by **tebriel** » Tue Sep 05, 2006 8:22 pm

do you have a wide band gauge to see what your fuel ratio is doing? those are all just tuning issues.
-teb

sindre · Post by **sindre** » Wed Sep 06, 2006 9:00 am

tebriel wrote:do you have a wide band gauge to see what your fuel ratio is doing? those are all just tuning issues.
-teb

So I have to do the warm start issue in VE? and yes I have WB.

Matt Cramer · Post by **Matt Cramer** » Wed Sep 06, 2006 9:41 am

Check the cranking table and warmup enrichments. You can tweak the warm-up so it's still active on a hot day.

ae1969 · Post by **ae1969** » Wed Sep 06, 2006 11:07 am

sindre wrote:driving with MS-II v.3.0 on a audi 10v turbo ignition and fuel

when it's cold it starts okay, but when it's warm so that the cold start enrichments not is there I have to turn it a loty before it starts. Is there somwhere I can give it more fuel to start(cranking)?

I also have trouble with driving on cold engine, it wont have high rpm, so that I use verry long time to get to driving speed in the morning.

And one last question... When the turbo spins but the engine will not have it, shall I tune ignition advance up or down?
(i get pressure, but no accelleration....)

- hard starting can be affected by Cranking RPM, After Start Enrichment, Cranking Pulse, Priming Pulse width, Warm Up enrichment. *** Read these areas again.

- cold engine with a low rpm - DO you run an idle stepper? If not you can play with timing, and fuel to compensate for this behavior.

- If turbo spins and engine will not have it. SOMETHING is not right. Carefull. You need a wideband and preferably and EGT if you want to tune by the seat of your pants. Generally ignition advance is pulled back as boost comes on.

tebriel · Post by **tebriel** » Wed Sep 06, 2006 11:36 am

can you explain what your wideband is saying during those moments of power loss? it's either too rich or too lean

sindre · Post by **sindre** » Thu Sep 07, 2006 11:08 am

thanks for all answers!

turbo spin but engine will not have it:
to much fuel in warm up...11 afr is to much

warm up and warm start:
what should be in "number of ignition cycles"? what does it do?

it's still hard to start when it is warm....

i do not have an idle stepper

sindre · Post by **sindre** » Fri Sep 08, 2006 2:12 pm

sindre wrote: what should be in "number of ignition cycles"? what does it do?

I repeat my self. default is 350

ae1969 · Post by **ae1969** » Fri Sep 08, 2006 5:55 pm

can you post your msq file

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Engine is hard to start

Engine is hard to start

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