1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

Strange power loss...

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Old 08-10-03, 12:45 AM
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Strange power loss...

Well, while making my 4th run at an autox last weekend, something happended on my 80 that I have not been able to identify yet. When pulling under load, my car is down severely on power, almost bogging out. My first though was fuel delivery. Checked the pump for operation (holley blue). Replaced the fuel filter (though I was able to blow through it with little resistance). Adjusted the pressure regulator (holley blue). Checked the inlet screens on both carbs, and checked the float level on both carbs. Everything seems to be okay on that side. Next checked the spark. Have been running DLIDFIS for awhile. Checked all three coils. Replaced plugs and wires. Checked cap & rotor (about 1000 miles on that). Adjusted the timing. Found nothing wrong there. I am at a loss. I tried several different timing setups, replaced the regulator with straight line to make sure that it wasn't malfunctioning, and resynced the carbs.

I am running the RE Dual Weber 36DCD setup and have the full RB Exhaust. Any suggestions would be appreciated. I don't have much hair left to pull out...
Old 08-10-03, 01:00 AM
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check compression?, oil injection. make sure that the the oil injectors are getting proper vacum and the linkage isn't stuck. maybe bad gas. and jsut outa curiosity what is DLIDFIS said for and what is it?
Old 08-10-03, 01:09 AM
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dual leading ignitor direct fire ignition system

do a search for it in this forum and you will understand. Oil injection system is intact and seems to be functioning as it should. It has a great idle, so I don't know if a compression loss fits the bill, but I may be in denial. I don't have a guage to check it, so that will have to come later, I guess.

Motor only has 73,000 miles on it. I will pray that compression is not the problem...
Old 08-10-03, 01:33 AM
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well.....


i would say a seal got stuck......


or somthing... .cause you got gas and spark................. and header...


how much power loss?


and where at?


maybe the brakes are sticking.... or wheel bearings are in need of replacing......... or tires are rubbing.... or somthing........ ebrake functioning correctly?

clutch slipping?



flooding out?


food for thought...


Laterz..... triple poster
Old 08-10-03, 03:56 AM
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Originally posted by 79+80+84_rx-7
well.....


i would say a seal got stuck......
God help me, I hope not.


Originally posted by 79+80+84_rx-7
or somthing... .cause you got gas and spark................. and header...
That would appear to be correct, unless I am missing something. I have no clue what though.


Originally posted by 79+80+84_rx-7
how much power loss?
a lot. Like driving a grain truck instead of a sporty car. Like making you want to cry cause you can't figure it out and your baby is in pain bad.


Originally posted by 79+80+84_rx-7
and where at?
Most noticeable everywhere above 3000 rpms...


Originally posted by 79+80+84_rx-7
maybe the brakes are sticking.... or wheel bearings are in need of replacing......... or tires are rubbing.... or somthing........ ebrake functioning correctly?
Brakes sticking may be a possibility I had not considered, but I don't think they would cause these symptoms. ebrake appears to be functioning as normal.

Originally posted by 79+80+84_rx-7
clutch slipping?
No.



Originally posted by 79+80+84_rx-7
flooding out?
Maybe, but I tried different levels with the regulator including 1 to 2 psi with no difference between any of the settings...


Originally posted by 79+80+84_rx-7
food for thought...


Laterz..... triple poster
Darnit!! I broke the webternet.

Last edited by JDuncan; 08-10-03 at 04:02 AM.
Old 08-10-03, 04:22 AM
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Gas tank fuel pick up line plugged perhaps?
Old 08-10-03, 04:29 AM
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but it is showing good volume under the hood with the lines off. I dunno. I obviously should be asleep, but I can't cause I am having to give up a race today since I can't figure it out.
Old 08-10-03, 07:58 AM
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It could be a blocked jet or something like that. Maybe try stripping the carbs down and cleaning everything.
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