dodge ram 318 cranks really fast but doesnt start


Asked by Jul 01, 2013 at 10:31 AM about the 1995 Dodge Ram 1500 2 Dr LT 4WD Standard Cab LB

Question type: Maintenance & Repair

dodge ram 318 cranks really fast but doesnt start, sometimes if you leave it sit it will eventually start but when it turns really quickly like the starter is on speeders thats when it wont start. I replaced crank sensor, replaced starter, and it seems to be getting spark. Im pulling my hair out trying to figure this out. Any help is greatly appreciated.

5 Answers

Lars Cats

Have you done a compression check yet?


No i havent tried a compression check. But the truck runs fine after it starts. If it had to do with compression it would bog out wouldnt it?

Lars Cats

An engine that is cranking over unevenly or abnormally fast, is a key indicator of an engine mechanical failure. A compression check should be performed to detect a mechanical failure. If the engine is in proper mechanical order, the ignition system should be inspected for spark while the engine is cranked. If there is no spark, the ignition control module, distributor pick-up or crankshaft sensor should be tested. A visual inspection of the distributor cap and rotor (if so equipped) should be performed. If spark and proper engine compression are present, a diagnosis of the fuel system will be necessary. Fuel pressure and injector pulse should be tested. You will need to determine if the electric fuel pump is operating, the injectors are firing and there is adequate fuel pressure. If compression is too low it will be very hard to start but may run, but with less power than normal.

1 out of 1 people think this is helpful.

Thanks ill check what you have said.

1 out of 1 people think this is helpful.

I have a1976 Dodge van/RV with a 318 with a carter thermaquad carb on it. If I let it sit for more than 2 or 3 days, the only way I can get it to start is to pull the air cleaner cover and spray starter fluid several times. Once it starts, I have to continue to spray for 4-5 seconds , and then it runs fine. The engine only has 18000 miles on it, but it has set for extended periods of time in the past . Is it possible it is losing the carburetor prime somehow? Any help is greatly appreciated . Jim F

1 out of 1 people think this is helpful.

Your Answer

Add photo

Related Questions

Ram 1500

Looking for a Used Ram 1500 in your area?

CarGurus has 13,898 nationwide Ram 1500 listings starting at $995.


Search Dodge Ram 1500 Questions

Dodge Ram 1500 Experts

#1 Dan Connell
Dan Connell
Reputation 5,260
#2 pudgybear
Reputation 5,000
#3 dandyoun
Reputation 4,670
View All

Related Models For Sale

Used Ford F-150"
3,174 Great Deals out of 215,800 listings starting at $1,000
Used Dodge Ram 2500"
155 Great Deals out of 5,800 listings starting at $2,289
Used GMC Sierra 1500"
1,033 Great Deals out of 55,955 listings starting at $2,400
Used Toyota Tacoma"
622 Great Deals out of 30,001 listings starting at $2,850
Used Dodge Dakota"
151 Great Deals out of 4,812 listings starting at $900
Used Dodge Ram 3500"
110 Great Deals out of 2,485 listings starting at $4,995
Used Ford Mustang"
726 Great Deals out of 41,222 listings starting at $900
Used Jeep Wrangler"
428 Great Deals out of 16,258 listings starting at $2,395

Used Cars For Sale

2010 Dodge Ram 1500 For Sale
92 Great Deals out of 1,591 listings starting at $4,695
2009 Dodge Ram 1500 For Sale
46 Great Deals out of 1,313 listings starting at $5,999
2008 Dodge Ram 1500 For Sale
88 Great Deals out of 1,752 listings starting at $4,500
2007 Dodge Ram 1500 For Sale
74 Great Deals out of 1,722 listings starting at $3,595
2006 Dodge Ram 1500 For Sale
69 Great Deals out of 1,605 listings starting at $1,795