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dannypat
Anonymous Poster
dannypat15@yahoo.com
May 3, 2008, 2:32 PM
Post #1 of 10
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1995 mustang 5.0
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2 problems, maybe related.
FIRST: Slow start, or should I say, it turns over almost 5 or 6 seconds before it fires.
SECOND: When driving, Before the engine warms up,
when trying to speed up at low RPMs (its a five speed) It sounds like its backfiring. Wierd sounding backfiring, not from exhaust, more from intake maybe? A couple things I'm thinkin is,
Tune-up?
intake gasket?
Oh yeah...after its warmed up, runs great.
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dannypat
Anonymous Poster
dannypat15@yahoo.com
May 3, 2008, 2:33 PM
Post #2 of 10
(5450 views)
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Re: 1995 mustang 5.0
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Oil looks fine ...FYI
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
May 3, 2008, 2:53 PM
Post #3 of 10
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Re: 1995 mustang 5.0
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Tune-up never hurts if it's been a while. I'd take fuel pressure readings and check timing chain. 5.0 suggests this is still the Windsor block engine (not sure what Ford exactly put in Mustangs this year) and should use a distributor still - right? If so let me know as I suspect an original chain in a car that may have had some hard use and could be an issue - I'll wait to hear more from you or other's ideas here,
T
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dannypat
Anonymous Poster
dannypat15@yahoo.com
May 3, 2008, 3:07 PM
Post #4 of 10
(5447 views)
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Re: 1995 mustang 5.0
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Thanks Tom,
I know a little bit about car stuff, but, Not alot.
Not sure if it has a distibutor, or not?
Bought the car a year ago, Could it be a fuel filter(was told to ask)? Bad pistons, or rings?
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
May 3, 2008, 3:42 PM
Post #5 of 10
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Re: 1995 mustang 5.0
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I apologize for not knowing this engine for sure. It's likely the 5.0 that was modified from the original 302 CI that dates way back and has a distributor. The Mustangs and some others altered them for performance but may look the same at a glance as ones used in older Ford vehicles.
If it uses a distributor it would be up front and you'd see the eight wires and a coil wire in the center of a distrubutor cap. Otherwise there would be coil packs perhaps a set on each side but still with plug wires.
Backfiring back thru intake suggests a timing problem to me so far. That could also be plug wires, cap, rotor problems or as mentioned the timing chain is unable to keep on time.
Fuel filter should be replaced anyway if you don't have a good record that it's recent. I don't trust fuel anymore and never really did,
T
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
May 3, 2008, 3:51 PM
Post #6 of 10
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Re: 1995 mustang 5.0
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  Gold / Distributor Cap And Rotor Kit
Ok: A parts look up suggests this is the old engine style I'm thinking of but that could be screwed (meaning wrong) up too??
The pic is a common dist cap for a Ford 5.0 of the vintage and older.
As far as pistons and rings they aren't in the problem group of complaints so far. A valve perhaps but if it can idle well (can it?) then those probably aren't the issue now.
These engines did use a timing chain new with nylon cam gear that even with the best of care can have problems - any of those can - just a maybe right now.
How many miles on the car now? That might help with some better guessing for you,
T
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dannypat
Anonymous Poster
dannypat15@yahoo.com
May 3, 2008, 5:55 PM
Post #7 of 10
(5438 views)
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Re: 1995 mustang 5.0
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It does have a distributor cap. It idles fine.
QUESTION, why if its a timing issue, or tune up, when its wartmed up its goes away??
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
May 3, 2008, 6:17 PM
Post #8 of 10
(5437 views)
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Re: 1995 mustang 5.0
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Not always but most of the time weak links will show up when cold. There's a struggle time for all items to be at operating temps where they work best.
Timing chain just came to mind as there are a couple that have escaped notice with all other things checking out. It's a guess - that's all. There are some ways to check like removing dist cap with timing mark on TDC at damper and turn crankshaft while watching the rotor making note of how many degrees the crank can turn back and forth before it moves the rotor. More than about five is NOT too good. Otherwise you about have to take the front of the engine off to actually look at it and by then just replace it. Origs can last forever and some are surprises??
Miles can matter with this. History of an overheat would raise the chances too. It's kinda hard to say with any certainty right now.
With a backfire type thing the spark is probably not right either by wires that are weak/leaking electricity or the timing itself is changing or jumping around and a loose chain can do that - just a guess..........
T
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dannypat
Anonymous Poster
dannypat15@yahoo.com
May 3, 2008, 6:27 PM
Post #9 of 10
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Re: 1995 mustang 5.0
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Okay,Think I have some good places to start.
Just wanna say, Thank You for helping. Found this site about two weeks ago, I have a grand prix that I would call a lemon. You guys have helped me alomst a dozen times already. Rock on..
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
May 3, 2008, 7:51 PM
Post #10 of 10
(5430 views)
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Re: 1995 mustang 5.0
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Thanks for the kind words to all of us.
Good luck from "Kitty" and me
T
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