Losing Power When Taking Off, 1973 1.7L |
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Losing Power When Taking Off, 1973 1.7L |
JohnWayne |
Aug 24 2012, 02:00 PM
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#1
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Newbie Group: Members Posts: 23 Joined: 18-July 12 From: Colorado Springs,CO Member No.: 14,691 Region Association: None |
The car is a 1973 1.7l d-jet. The car drives really nice besides the fact it randomly loses power while taking off. Would this be a fuel pressure problem or something else?
Thanks, |
brant |
Aug 24 2012, 02:28 PM
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#2
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914 Wizard Group: Members Posts: 11,623 Joined: 30-December 02 From: Colorado Member No.: 47 Region Association: Rocky Mountains |
kinda sounds like a timing issue
did you follow the haynes manual when you checked timing? did you have the vacuum line disconnected when you set the timing? |
JohnWayne |
Aug 24 2012, 02:36 PM
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#3
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Newbie Group: Members Posts: 23 Joined: 18-July 12 From: Colorado Springs,CO Member No.: 14,691 Region Association: None |
which vacuum line is supposed to be disconnected when setting the timing?
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brant |
Aug 24 2012, 02:53 PM
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#4
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914 Wizard Group: Members Posts: 11,623 Joined: 30-December 02 From: Colorado Member No.: 47 Region Association: Rocky Mountains |
I don't have a manual in front of me.
it should be on the site through search its one of the vacuum lines on the distributor, advance I think without disconnecting it, your timing setting is false. did you set the timing at full advance? (3200 rpm-ish) |
JohnWayne |
Aug 24 2012, 02:59 PM
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#5
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Newbie Group: Members Posts: 23 Joined: 18-July 12 From: Colorado Springs,CO Member No.: 14,691 Region Association: None |
I never set it while at 3200rpm, so i'll try setting the timing again.
Thanks |
SLITS |
Aug 24 2012, 03:16 PM
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#6
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"This Utah shit is HARSH!" Group: Benefactors Posts: 13,602 Joined: 22-February 04 From: SoCal Mountains ... Member No.: 1,696 Region Association: None |
Both distributor lines disconnected ... 27 degrees @ 3000 - 3500 RPM.
I use 3000 RPM. |
brant |
Aug 24 2012, 03:19 PM
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#7
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914 Wizard Group: Members Posts: 11,623 Joined: 30-December 02 From: Colorado Member No.: 47 Region Association: Rocky Mountains |
the weights inside of the distributor change the advance. but at 3200 rpm they are fully extended and its at max advance.
setting the timing at idle means that when the weights kick up your advance you are change the timing a lot the vacuum pot on the distributor also advances and retards the timing depending on which side of the diaphram is being pulled/pushed by the vacuum (thus the need to disconnect the one line) you can't get your timing right without those 2 steps. I bet it runs a lot better when you get it re-timed. brant |
brant |
Aug 24 2012, 03:22 PM
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#8
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914 Wizard Group: Members Posts: 11,623 Joined: 30-December 02 From: Colorado Member No.: 47 Region Association: Rocky Mountains |
like always, do what Ron says.
and you might be able to throw in one or two degrees additional advance at this altitude. (but you can't drive the car down to sea level without changing it back to the factory 27degree's) does this happen to be the red car that just sold in colorado springs. Mikes car I believe.... |
JohnWayne |
Aug 24 2012, 03:55 PM
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#9
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Newbie Group: Members Posts: 23 Joined: 18-July 12 From: Colorado Springs,CO Member No.: 14,691 Region Association: None |
Thanks for the answers guys. I'll set the timing tonight.
Oh and this is a different 914 than the one that just sold. Attached thumbnail(s) |
brant |
Aug 24 2012, 03:59 PM
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#10
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914 Wizard Group: Members Posts: 11,623 Joined: 30-December 02 From: Colorado Member No.: 47 Region Association: Rocky Mountains |
pretty car!
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