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Author
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Topic: Hard Cranking!!!
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Seth
Journeyman Posts: 4
From: colton, ca, usa
Registered: Feb 2002
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posted 03-03-2002 05:14 PM
   
Got a 69 Torino with a 390. The car will turn over but it's really struggling to. It doesn't turn over quick enough to start. The starter, solenoid, regulator, and battery are all new. None of them made a difference. Motor was just rebuilt, and isn't locked up. Took the plugs and it barely got easier. Can you help me? Thanks.
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Fastymz
Moderator Posts: 10683
From: Reno Nv USA MEM#1240
Registered: Apr 2001
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posted 03-03-2002 06:27 PM
Have you checked the timing.I know if the timing is way off it can make it hard to crank.SCOOP ------------------
65 coupe,1969-351w,RPM intake,Carter625,shorty headers,2.5 exhaust, Flowmasters,C4,open 8" 2:80,Big Boss 429 hood scoop,Crager SS,Black Suede.
MEM#1240 https://mustangsandmore.com/ubb/Fastymz.html
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V8 Thumper
Gearhead Posts: 3267
From: Orange, Ca. United States of America
Registered: Dec 2001
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posted 03-03-2002 06:57 PM
New motor, hua? Fresh PAINT on the new motor?Take the ground (-) wire off of where it bolts to the block, file or sand the paint off... while you're at it, freshen up those battery terminals too. Take two of these and call me in the morning 
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Rustang
Gearhead Posts: 443
From: Clarion PA
Registered: Nov 2000
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posted 03-03-2002 07:02 PM
Thumper's on the right track! Also make sure you have good chassis ground and the motor is grounded to the chassis. You should also run a minimum of #2 battery cable. Clean all your connections and battery terminals. If you have a battery in the trunk you should run a minimum #0 wire. If you see any smoke when the things crankin' that's where your bad connection is!------------------
'68 mustang 351 clevor- 10.92@124
'67 Stang, 351W -11.18@118
'69 351C Torino-14.90@100
'78 Pickup 351W-15.56@88
'79 Pickup 460 ET=??
http://www.rustang-racing.cityslide.com/contents/contents.cfm/712231
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Fastback68
Gearhead Posts: 1564
From: Sucat, Paranaque, Philippines
Registered: Jul 99
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posted 03-03-2002 08:47 PM
Are you sure the battery is big enough? Are you running an auto? I know one ex-idiot (me!) who had this problem with a 302 auto until he switched from a 2SM battery to a 3SM.
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65351w
Journeyman Posts: 4
From: Bellevue Ne US
Registered: Feb 2002
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posted 03-04-2002 12:10 AM
I had the same problem with my 65 when I droped in my rebuilt 351w, new battery but did not have enough cranking amps to turn the engine over fast enough, got a battery with 800 cca and worked great.------------------
65 coupe,351w 30over, Edlebrock RPM cam,Performer intake,T-5
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Seth
Journeyman Posts: 4
From: colton, ca, usa
Registered: Feb 2002
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posted 03-04-2002 08:16 PM
Thanks for all the suggestions guys. The battery is an 840 with 525cold. About smoking when turning over, the solenoid relay did that until we replaced it, but it doesn't do that anymore. the grounds all look pretty good. So i'll try it again thanks.
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SteveLaRiviere
Administrator Posts: 32655
From: Saco, Maine
Registered: May 99
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posted 03-04-2002 08:25 PM
Perhaps your timing is too far advanced?The engine was just rebuilt, huh? Does it turn over easily with a socket on the crank? Have you prelubed it? You're not doing your new cam any favors by not starting it easily. I'd jump start it to get it fired right off, run the cam in, and then worry about the hard starting later. ------------------
'70 Mustang Mach 1 M code 351C 4V/FMX/3.25 open
'72 Mustang Sprint Coupe 351C 4V/FMX/4.30 Trac Lok
'94 F-150 XL 5.8L/E4OD/3.55 Limited Slip
MCA Member # 47773
Every one needs to believe in something. I believe I'll have a beer!
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bluestreek
Gearhead Posts: 1202
From: Athens,GA
Registered: Jul 2001
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posted 03-05-2002 12:19 AM
If the engine turns over OK with jumper cables, then the extra juice may be overcoming a ground problem. If it still turns over hard, then your timing is wrong or advanced too far.When I moved my battery to the rear, I encountered the same problem. I thought my battery or starter was bad but before replacing them, I got the biggest and shortest ground cable, and a heavy duty flatwound ground-strap, at the autoparts store. I connected the battery ground cable to a well sanded place on the body, and then took the ground strap and connected one end to a clean solid connection on the firewall, and the other end to a bellhousing bolt. Afterwards, my engine turns over better than ever. Good luck,
BS
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thedave66
Gearhead Posts: 244
From: mountain home, idaho
Registered: Sep 2001
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posted 03-05-2002 09:00 PM
this may be a little late, but I had the same problem on my 289. turned out the starter was fried. Got a new one haven't had a problem since. dave
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