2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

FC problem Boosting (help please)

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Old Aug 7, 2008 | 11:33 PM
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From: SAN FERNANDO VALLEY, CA
FC problem Boosting (help please)

where can i get a clear image on the vacuum lines?? cause when i start out on first gear i get this bad reaction on 4k rpm's like it wants 2 boost but its not. it reads that it is boosting on the gauge but really its not boosting. what can the problem be? please help
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Old Aug 7, 2008 | 11:50 PM
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Sounds like you have a boost leak. Is your boost gauge on the hot side or of the manifold? Stock setup?
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Old Aug 8, 2008 | 07:50 PM
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Old Aug 8, 2008 | 07:52 PM
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well this is it i thought it could of been the secondary injectors because they usually kick in at around 4K but when i push the gas in sounds like it wants to boost but it just doesnt it runs fine under 4K rpm's
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Old Aug 8, 2008 | 10:59 PM
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Go get a boost leaker tester. They're cheap. Like 15-30 depending on where u get it or if you make it, but u definitely have a boost leak. If it were secondaries you would know by how it drives above 4k whether ur boosting or cruisin
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Old Aug 8, 2008 | 11:31 PM
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From: SAN FERNANDO VALLEY, CA
but you know what bro, i did notice that once i reach 4K it starts to act up so then i shift into a higher gear so it wont reach 4K. once i pass 4K im boosting but doesnt boost cause of the problem its having.
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Old Aug 8, 2008 | 11:46 PM
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im thinking its my secondaries now cause the problem acts up above 4K
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Old Aug 9, 2008 | 05:16 PM
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Your afm is mounted horribly, flip it over and make sure it's level then report back.
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Old Aug 12, 2008 | 06:49 PM
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Thumbs up progress???

is that ur dd? I was wondering if u figured out whats going on. I'm assuming u got a ecu upgrade if u got fmic( upgraded or aftermarket turbo)I don't see a need for a fmic on a bone stock turbo. Anyway if u do or don't have the car hooked up to a diagnostic machine. I kno I kno, wasted money but if it gets u boosting proper the 120 is worth it!
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Old Aug 13, 2008 | 07:55 PM
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ok i started up my car today and with a fresh battery to give it a good spark and i noticed white smoke come out constantly so i turned it off what causes that smoke problem?
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Old Aug 13, 2008 | 11:57 PM
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With the car cold and the rad cap on the thermostat neck removed start the car. Do you see air bubbles coming up? Sparkplugs wet after the car sits? Does the white smoke smell sweet?
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Old Aug 14, 2008 | 03:41 AM
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your afm is mounted on backwards.. try making it sit upright then look at your readings again. My afm used to be mounted on backwards aswell and at times i would get crazy readings. good luck
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Old Aug 15, 2008 | 07:26 PM
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ill give it a shot good looking out bro ill report back=)
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