Hard Start when Hot

There is a Bosch relay some of the guys have installed that helps (I think PAP 348 has some pics of his install on here) and I had great success with Dave's connector kit. No Doubt details some tests on his 348 Primer (http://www.my348.com/348.html#Starter) to help isolate the cause(s) which can vary - low voltage, fuel pressure regulators or crank sensors getting marginal, flywheel needing the grease repacked, etc.

My advice would be to do a search, there have been quite a few threads on the subject (example: http://www.ferrarichat.com/forum/showthread.php?p=135922487#post135922487). You need to determine the cause of your hot start problem as it isn't always as simple as a voltage drop issue.

 

May be obvious, but are you turning all accessories (a/c, radio, etc.) off before cranking?

 

Dont pump the gas pedal, the car is EFI and its a waste of effort.

Mmmmmmmmmmm, could be as simple as a voltage drop from the ignition to the starter.

Can you have someone crank the engine while you check how many volts you have at the starter?

That will soon tell you whats going on.

Have you got a multimeter?

Maybe the timing IS too far advanced?

Nah, sounds strange though. Perhaps a starter solenoid is drawing too much current. If you CAN check the voltage at the starter.................................see if you can borrow an amp meter to check how many amps the starter motor is drawing while you crank the engine.

Could be a faulty starter motor solenoid or starter motor windings.

Should be an easy fix either way, just need to do some diagnosing mate.

Cheers mate, here are some pics/thread of my Bosch starter relay install.

http://www.ferrarichat.com/forum/showpost.php?p=136967618&postcount=12

http://www.ferrarichat.com/forum/showpost.php?p=136974798&postcount=22

http://www.ferrarichat.com/forum/showpost.php?p=136989918&postcount=27

 

Because the flywheel acts as a harmonic balancer for the crank. So when it is low on grease it doesn't do a good job of balancing things. At the front of the engine there are 2 crank sensors that are sensitive to the gaping between the teeth of the crank pulley and the tip of the crank sensor. If those aren't the proper distance, or the distance is flucuating, it can cause the ecu/s to have a hard time figuring out were in the crank rotation things are so that it knows when to fire the injectors and the spark plugs.

I could be wrong, but that's my understanding of it, and welcome any correction/education on the matter.

 

Good to hear its sorted now mate.

 

****ing FChat is awesome.

 

Maybe I'm like a lot of people on here, I follow everyone's problems as if they're my own. I'm glad to hear you got it fixed. I'll keep this one stored in the back of my mind in case it happens to me someday.

Enjoy the ride, Lou

 

How do you "repack the flywheel" ? Do you have to remove the gearbox or can it be done from under the car?

 

This site will tell you everything you need to know:

http://myferrari.page.tl/Home.htm

Start with the links for clutch replacement, and follow it through to repacking the flywheel.

- Eric

 

Cool man.

 

I've done this, and as an amateur, I'd say it's a fast, fairly easy process. Sorry, but $700+ labor sounds like highway robbery. Where did you have this done?

 

I was thinking the same thing. $700 is a lot of money.

But say its an hour to remove pumpkin, a few hours to pull apart flywheel, clean, inspect and grease then another hour to put it all back together again. A days labour will soon pass and you will get a $700 bill at the end of it.

 

I just would think if it's a production shop that knows the job, $350 labor would sound about right. This was just a flywheel pack, right? Or did I miss something?

 

Yeah, you're probably right.

I assume they have done the job many times before, but I cant confirm that.

Maybe they charge $250 and hr labour?

 

The important part is that your car is fixed......

 

As long as you're happy, thats the main thing.

 

I'm also glad you're happy. There have been other threads that discussed high prices for work. I wasn't trying to be critical, but thought a comparison of prices for this job might help other owners. Sorry if it came across as otherwise.

 

I didn't think you were snippy, but thought I may have offended you. It's all good

I'm sure a quality independent or dealer would check and repair other things needed along with the flywheel, so it's understandable.