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DIY Turbo Discussion greddy on a 1.8? homebrew kit?

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Old 09-16-2008, 01:35 PM   #1
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Default Starting Problem

Sometimes when trying to start the car, it turns over about half a turn, stops like the battery is dead, then continues and starts just fine.

The battery is fully charged, and was new 18months ago, so it shouldn't be a bad battery.

Didn't have this problem when the car was stock, but I don't recall when exactly it started. Sometime between when it was stock and when I was running MS and the 460cc injectors.

I know it does it when cold, but I think (actually haven't noticed) it also does it when warm. I'll have to pay attention and see if it's only a cold-start issue or an all-the-time issue.
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Old 09-16-2008, 01:43 PM   #2
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my bet is it has too much PW while cranking.
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Old 09-16-2008, 01:51 PM   #3
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could it simply be the starter getting ready to take a ****?
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Old 09-16-2008, 02:24 PM   #4
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could it simply be the starter getting ready to take a ****?
It doesn't seem like it, since most of the time it works great. it's only once in a while that it hangs up like this.
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Old 09-16-2008, 02:26 PM   #5
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my bet is it has too much PW while cranking.
What sort of PW should I be running for 460cc on a 1.8?

Right now they're between 3.2 and 8.8 going down the temp scale.
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Old 09-16-2008, 03:47 PM   #6
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When I was running my stand alone SDS and I had advanced timing to much I would get the same issue. Just a thought.
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Old 09-16-2008, 04:50 PM   #7
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Between this post and your other post about the fan mod, maybe your ignition switch has issues.
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Old 09-16-2008, 05:32 PM   #8
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What sort of PW should I be running for 460cc on a 1.8?

Right now they're between 3.2 and 8.8 going down the temp scale.

sounds like the stock values from the mspnp base map.

did you calculate them for larger injectors?

take 1ms off each. then multiply by the % increase of the 460s over the 265s.

so if the 160* value was 3.2. take 2.2 (since 1ms is opening and closing time) and multiply by .73 (27% larger) and get 1.6 and add the 1ms back in. This gives you 2.6 for the value.
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Old 09-16-2008, 05:37 PM   #9
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Quote:
Originally Posted by Braineack View Post
sounds like the stock values from the mspnp base map.

did you calculate them for larger injectors?

take 1ms off each. then multiply by the % increase of the 460s over the 265s.

so if the 160* value was 3.2. take 2.2 (since 1ms is opening and closing time) and multiply by .73 (27% larger) and get 1.6 and add the 1ms back in. This gives you 2.6 for the value.
There must be my problem. I tried fixing those values for the new injectors but it wouldn't start. I forgot to take the opening and closing time into account. I'll re-do that and see how it goes.
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Old 09-16-2008, 09:23 PM   #10
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I have the same exact problem. For me, it was the wire on the starter shaking loose when the motor cranked over. I still haven't managed to fix it yet (the wire wont stay secured on the starter).
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Old 09-23-2008, 05:50 PM   #11
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Did you ever figure out what the problem was? I thought I had fixed it in my car (by securing the starter wire clip better) but it all of a sudden came back today and the car couldn't even turn over enough to start (luckily I was parked on a hill so I could roll-start it).
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Old 09-23-2008, 06:27 PM   #12
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Nope. I backed off the starting PW but it doesn't seem to have fixed the problem. Now it takes more cranks to start, but I think it only started doing that once I put the turbo on, which is strange.
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