Engine Problems? (LOOK HERE)

TurboLX · January 24th, 2008, 09:30 PM

1.) Check spark plugs - This is the first thing I tell
people to do if they think they've got a problem. Pull
all your plugs out and take a look - it will be obvious
if one cylinder is having a problem.

2.) Do a leak-down test - If you think your engine is
down on horsepower a leak-down test may help you locate
the problem. It will find blown head gaskets; broken or
stuck valves; and bent or burned valves. If you're
missing a lot of power you'll need to see over 20%
leakage.

3.) Inspect oil filter - Same as your weekly
maintenance. If bearing problems are caught early by
checking the filter, you may save thousand of dollars
in repairs. A spun bearing will give little warning -
if you think there is a problem, check the filter (it
will be obvious).

4.) Check drain plug - If you're at the track and don't
have a way to inspect your filter, the next best thing
to do is check the magnetic drain plug (You do have
one, right?).

5.) Inspect valvetrain - Check the valve spring
pressure; valve lash; look for broken coils on inner or
outer springs; broken rocker arms; missing lash caps
or; broken or bent pushrods.

toscano17 · March 9th, 2008, 04:14 PM

Quite Helpful. Can a seized engine be rebuild? I've been told to just buy a shortblock instead.

TurboLX · March 10th, 2008, 12:24 PM

a siezed engine is no good, the pistons are welded shut to the bores

agood1 · October 30th, 2008, 03:21 PM

Is the 4.6L SVT cobra motor all aluminum or are the cylinders steel sleeved?

Nitrous Injected · December 17th, 2008, 12:29 AM

i beleve all aluminum

LightDude · December 17th, 2008, 09:21 PM

That's a list of good tips.. Thanks..

Originally Posted by agood1

Is the 4.6L SVT cobra motor all aluminum or are the cylinders steel sleeved?

I think it's all aluminum...

CrazyWildMike · March 16th, 2009, 12:55 PM

I build perf atv and sled engines, they all are high rpm aluminum block engines, and they all have cast or steel sleeves. I would think that if the 4.6l aluminum block had bare aluminum cylinders you would end up getting a instant bore job by the much harder cast or molly rings!

Then Again, I Have Been Wrong Before, And Likely Could Be Wrong Again!!!

...I just had to check, I pulled out my Ford Racing catalog and am looking at the Aluminum 4.6l blocks, and the "Aluminator" blocks, and I can't see any sleeves, then again, the pics aren't all that good for detail.

black sn95 · April 12th, 2009, 10:17 PM

I just bought a 91 5.0 coupe, I went out to start it up today and im getting all power when I turn the key but nothing to the starter. No click, no sound, but the the fuel pump does cut on and all dash lights work. Any ideas? Thanks!

black sn95 · April 13th, 2009, 10:50 PM

Never mind! Bad clutch switch. Thanks anyway.

January 24th, 2008, 09:30 PM	#1
TurboLX Banned 1990 Mustang LX Turbo 9.71@141.6 mph Join Date: Oct 2006 Location: NY Posts: 8,780	Engine Problems? (LOOK HERE) 1.) Check spark plugs - This is the first thing I tell people to do if they think they've got a problem. Pull all your plugs out and take a look - it will be obvious if one cylinder is having a problem. 2.) Do a leak-down test - If you think your engine is down on horsepower a leak-down test may help you locate the problem. It will find blown head gaskets; broken or stuck valves; and bent or burned valves. If you're missing a lot of power you'll need to see over 20% leakage. 3.) Inspect oil filter - Same as your weekly maintenance. If bearing problems are caught early by checking the filter, you may save thousand of dollars in repairs. A spun bearing will give little warning - if you think there is a problem, check the filter (it will be obvious). 4.) Check drain plug - If you're at the track and don't have a way to inspect your filter, the next best thing to do is check the magnetic drain plug (You do have one, right?). 5.) Inspect valvetrain - Check the valve spring pressure; valve lash; look for broken coils on inner or outer springs; broken rocker arms; missing lash caps or; broken or bent pushrods.

December 17th, 2008, 12:29 AM	#5
Nitrous Injected Regular 2003 Mustang GT 13.987@100.98 MPH Join Date: Oct 2008 Location: Mt. pleasant Posts: 107	i beleve all aluminum __________________ 88 NOTCH,351 WINDSER,BUILT C6 TRANY,750 CFM CARB,4:30 GEAR=??? WWIII 2003 MUSTANG GT SOLD with 488 RWHP and 520 FT-LB on 150 shot and bolt ons R.I.P.

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March 9th, 2008, 04:14 PM	#2
toscano17 Newbie Join Date: Feb 2008 Posts: 14	Quite Helpful. Can a seized engine be rebuild? I've been told to just buy a shortblock instead.

March 10th, 2008, 12:24 PM	#3
TurboLX Banned 1990 Mustang LX Turbo 9.71@141.6 mph Join Date: Oct 2006 Location: NY Posts: 8,780	a siezed engine is no good, the pistons are welded shut to the bores

October 30th, 2008, 03:21 PM	#4
agood1 Newbie Join Date: Oct 2008 Posts: 11	Is the 4.6L SVT cobra motor all aluminum or are the cylinders steel sleeved?

March 16th, 2009, 12:55 PM	#7
CrazyWildMike Newbie 82 Mustang Coupe w/a 429 Join Date: Dec 2007 Location: Alberta / Canada Posts: 12	I build perf atv and sled engines, they all are high rpm aluminum block engines, and they all have cast or steel sleeves. I would think that if the 4.6l aluminum block had bare aluminum cylinders you would end up getting a instant bore job by the much harder cast or molly rings! Then Again, I Have Been Wrong Before, And Likely Could Be Wrong Again!!! ...I just had to check, I pulled out my Ford Racing catalog and am looking at the Aluminum 4.6l blocks, and the "Aluminator" blocks, and I can't see any sleeves, then again, the pics aren't all that good for detail.

April 12th, 2009, 10:17 PM	#8
black sn95 Newbie Join Date: Nov 2008 Posts: 18	I just bought a 91 5.0 coupe, I went out to start it up today and im getting all power when I turn the key but nothing to the starter. No click, no sound, but the the fuel pump does cut on and all dash lights work. Any ideas? Thanks!

April 13th, 2009, 10:50 PM	#9
black sn95 Newbie Join Date: Nov 2008 Posts: 18	Never mind! Bad clutch switch. Thanks anyway.

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