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Capri N/A 89-94
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"Dieseling" sound when accellerating
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Topic: "Dieseling" sound when accellerating (Read 7452 times)
Snigalfriz
Full Member
Posts: 211
1991 NA Capri
"Dieseling" sound when accellerating
«
on:
November 07, 2011, 09:47:00 AM »
Folks my capri is making a "dieseling" sound when accelerating or at highway speeds, any ideas?
Logged
Why? I have more time than money, that's why I work on this car!
1991 Mercury Capri 5-sp
1992 Mercury Capri 5-sp swap
1999 Ford Contour SE 24v v6
2003 Lincoln LS
2007 Saturn Outlook XE AWD
2014 Chevy Cruze LT
rcdraco
Guest
"Dieseling" sound when accellerating
«
Reply #1 on:
November 08, 2011, 12:27:00 PM »
Test the coil, check the wires, and possibly change the gap to the tighter tolerance of .24 as suggested.
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Snigalfriz
Full Member
Posts: 211
1991 NA Capri
"Dieseling" sound when accellerating
«
Reply #2 on:
November 09, 2011, 04:24:00 AM »
Thanks for the suggestions. I will be putting in new plugs, that I planned on installing last week, this evening and possibly wires.
Logged
Why? I have more time than money, that's why I work on this car!
1991 Mercury Capri 5-sp
1992 Mercury Capri 5-sp swap
1999 Ford Contour SE 24v v6
2003 Lincoln LS
2007 Saturn Outlook XE AWD
2014 Chevy Cruze LT
blueamber
Sr. Member
Posts: 450
"Dieseling" sound when accellerating
«
Reply #3 on:
November 09, 2011, 08:23:00 AM »
So what do you consider dieseling? If its clattering like a diesel engine does, then that's valves starved for oil, or timing is off...what?...chris
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Rocketman
Administrator
Old-Timer
Posts: 5494
91 BPT AWD Capri & 1991 XR2
"Dieseling" sound when accellerating
«
Reply #4 on:
November 09, 2011, 08:54:00 AM »
Is it possible to take a video / sound clip of it?
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1.8L Turbo All Wheel Drive Capri... the "GTXR2"
Snigalfriz
Full Member
Posts: 211
1991 NA Capri
"Dieseling" sound when accellerating
«
Reply #5 on:
November 09, 2011, 08:56:00 AM »
will try to get a sound clip.
Logged
Why? I have more time than money, that's why I work on this car!
1991 Mercury Capri 5-sp
1992 Mercury Capri 5-sp swap
1999 Ford Contour SE 24v v6
2003 Lincoln LS
2007 Saturn Outlook XE AWD
2014 Chevy Cruze LT
waretrop
Jr. Member
Posts: 74
"Dieseling" sound when accellerating
«
Reply #6 on:
November 09, 2011, 02:04:00 PM »
Is it really dieseling or a spark knock? I have the original books for both our Capri's (91 N/A and 93 N/A) and they both mention that N/A can have an occasional spark knock and not to worry. Also very strong reading and referncing NOT to use hi-octane gas. Kerry
Logged
91 N/A 5 sp - His
93 N/A Auto - Hers
93 Mustang LX Auto - ours
rcdraco
Guest
"Dieseling" sound when accellerating
«
Reply #7 on:
November 09, 2011, 04:02:00 PM »
Mine occasionally does this since I'm a bit rich and it does it primarily on cold starts after a more aggressive park. But it normally clears out after 5 minutes of "blowing the carbon out" with about 1/4 throttle blips.
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Snigalfriz
Full Member
Posts: 211
1991 NA Capri
"Dieseling" sound when accellerating
«
Reply #8 on:
December 18, 2011, 08:02:00 AM »
I can rev the engine in neutral, and you don't hear it. When I am in gear and accelerating, you can hear it, or under any load like a 2nd gear start.
Logged
Why? I have more time than money, that's why I work on this car!
1991 Mercury Capri 5-sp
1992 Mercury Capri 5-sp swap
1999 Ford Contour SE 24v v6
2003 Lincoln LS
2007 Saturn Outlook XE AWD
2014 Chevy Cruze LT
fayzaldean
Jr. Member
Posts: 59
"Dieseling" sound when accellerating
«
Reply #9 on:
December 18, 2011, 08:27:00 PM »
check your timing
Logged
rcdraco
Guest
"Dieseling" sound when accellerating
«
Reply #10 on:
December 21, 2011, 06:58:00 AM »
You sure it's not a wheel bearing? Does the wheel vibrate at all, does the sound increase/decrease with speed? And another thing it could be if it occurs only when in gear under load, it could be a bad transmission mount and it's buzzing in a way that makes a weird sound.
Logged
Rocketman
Administrator
Old-Timer
Posts: 5494
91 BPT AWD Capri & 1991 XR2
"Dieseling" sound when accellerating
«
Reply #11 on:
December 21, 2011, 08:02:00 AM »
Does the car still have stock heat shields?
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1.8L Turbo All Wheel Drive Capri... the "GTXR2"
Snigalfriz
Full Member
Posts: 211
1991 NA Capri
"Dieseling" sound when accellerating
«
Reply #12 on:
December 21, 2011, 07:20:00 PM »
I will check the wheel bearings for play. As far as I know it has the stock heat shields.
Logged
Why? I have more time than money, that's why I work on this car!
1991 Mercury Capri 5-sp
1992 Mercury Capri 5-sp swap
1999 Ford Contour SE 24v v6
2003 Lincoln LS
2007 Saturn Outlook XE AWD
2014 Chevy Cruze LT
Snigalfriz
Full Member
Posts: 211
1991 NA Capri
"Dieseling" sound when accellerating
«
Reply #13 on:
December 21, 2011, 07:21:00 PM »
I will check the trans mounts as well.
Logged
Why? I have more time than money, that's why I work on this car!
1991 Mercury Capri 5-sp
1992 Mercury Capri 5-sp swap
1999 Ford Contour SE 24v v6
2003 Lincoln LS
2007 Saturn Outlook XE AWD
2014 Chevy Cruze LT
rcdraco
Guest
"Dieseling" sound when accellerating
«
Reply #14 on:
December 22, 2011, 05:14:00 AM »
Is there actually any noticeable reduction of power when it's making the noise? If not I highly doubt that it has any sort of miss. Granted, a high-end miss is possible; but very unlikely unless your plug wires are coated with oil or your plugs are bad.
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"Dieseling" sound when accellerating