05-09-2008, 12:12 PM
|
#1
|
|
Registered User
Join Date: Jan 2006
Location: The =305=
Posts: 521
|
98 350 No Start Issues.
Well the other day I was driving home and after making a right turn my truck felt weird so I looked down and the RPMS were fumbling around and then it popped a couple times and died. Then I tried to start it after like 10 minutes after checking everything, it cranked but would not fire.
So far I have checked and have good spark at the coil, fuel pressure, I also poured a shot glass worth of gas down the intake and tried to crank it and nothing but a couple of "sneezes" and soft pops like it tried to fire but could not.
Any other Ideas Guys? I am gonna check compression tonight as soon as I get a ride to the store to pick up a compression tester.
__________________
98 C1500 EC Step Side: 350, DI/DO Magnaflow, K&N filter, 3.73's, 33x10.50, 15" Cragar V-5, 4" susp. lift, 1" body lift, red top, big 3, rollnlock, halo head lights, clear corners, black tails, cb/pa, light bar
|
|
|
|
05-09-2008, 12:14 PM
|
#2
|
|
GMC RULZZ
Join Date: Mar 2005
Location: San Diego
Age: 43
Posts: 9,764
|
Re: 98 350 No Start Issues.
whats fuel pressure reading? is it above 55 psi.
__________________
 O2 GMC RCSB 4.8L V8 AUTO 3.73's
rebuilt/beefed up 4L60E(at 43,000miles)
 Matching Ninja 500r
|
|
|
|
|
05-09-2008, 12:42 PM
|
#3
|
|
Registered User
Join Date: Jan 2006
Location: The =305=
Posts: 521
|
Re: 98 350 No Start Issues.
65 plus or minus a few pounds.
__________________
98 C1500 EC Step Side: 350, DI/DO Magnaflow, K&N filter, 3.73's, 33x10.50, 15" Cragar V-5, 4" susp. lift, 1" body lift, red top, big 3, rollnlock, halo head lights, clear corners, black tails, cb/pa, light bar
|
|
|
|
|
05-09-2008, 12:50 PM
|
#4
|
|
GMC RULZZ
Join Date: Mar 2005
Location: San Diego
Age: 43
Posts: 9,764
|
Re: 98 350 No Start Issues.
any clanking noises while cranking?
__________________
O2 GMC RCSB 4.8L V8 AUTO 3.73's
rebuilt/beefed up 4L60E(at 43,000miles)
Matching Ninja 500r
|
|
|
|
|
05-09-2008, 01:41 PM
|
#5
|
|
not just one of the boys
Join Date: May 2007
Location: Holdenville, OK
Age: 24
Posts: 345
|
Re: 98 350 No Start Issues.
mine did something close to that once sp i'm gonna take a stab at it and say its either the fuel filter or the crank sensor
__________________
Christina www.myspace.com/chriskelley2003
1998 Chevy Cheyenne, 305 Vortec, 5 speed, reg cab, short bed
1995 GMC Sierra, 350 V8, auto, ext cab, short bed
|
|
|
|
|
05-09-2008, 02:53 PM
|
#6
|
|
Registered User
Join Date: Jan 2006
Location: The =305=
Posts: 521
|
Re: 98 350 No Start Issues.
I was thinking either the cam or crank sensor so I will check that, is there any way to verify that the crank sensor works?
__________________
98 C1500 EC Step Side: 350, DI/DO Magnaflow, K&N filter, 3.73's, 33x10.50, 15" Cragar V-5, 4" susp. lift, 1" body lift, red top, big 3, rollnlock, halo head lights, clear corners, black tails, cb/pa, light bar
|
|
|
|
|
05-09-2008, 02:59 PM
|
#7
|
|
not just one of the boys
Join Date: May 2007
Location: Holdenville, OK
Age: 24
Posts: 345
|
Re: 98 350 No Start Issues.
well mine came out in 3 peices so that's how i knew it was bad so i can't really help you on that one
__________________
Christina www.myspace.com/chriskelley2003
1998 Chevy Cheyenne, 305 Vortec, 5 speed, reg cab, short bed
1995 GMC Sierra, 350 V8, auto, ext cab, short bed
|
|
|
|
|
05-09-2008, 08:42 PM
|
#8
|
|
Registered User
Join Date: Jan 2006
Location: The =305=
Posts: 521
|
Re: 98 350 No Start Issues.
Btt
__________________
98 C1500 EC Step Side: 350, DI/DO Magnaflow, K&N filter, 3.73's, 33x10.50, 15" Cragar V-5, 4" susp. lift, 1" body lift, red top, big 3, rollnlock, halo head lights, clear corners, black tails, cb/pa, light bar
|
|
|
|
|
05-09-2008, 09:59 PM
|
#9
|
|
Registered User
Join Date: Jun 2005
Location: British Columbia
Age: 22
Posts: 89
|
Re: 98 350 No Start Issues.
Unplug the timing advance... does it fire? (Check your timing)
__________________
It's Not What You Buy... It's What You Build 
|
|
|
|
|
05-09-2008, 10:11 PM
|
#10
|
|
Registered User
Join Date: Oct 2007
Location: TN
Age: 26
Posts: 4,728
|
Re: 98 350 No Start Issues.
Think I would go with cam or crank sensor.
__________________
03 Silverado ECSB, Dmax, Allison, 3.73 G80
96 Silverado ECSB, 350, 4L60E, 3.42 G80
89 Camaro, 5 speed, 4.56's, Powertrax Locker
49 F-1, flathead 6, 4 speed, 2wd, unknown rear end. Old rust bucket.
|
|
|
|
|
05-09-2008, 11:15 PM
|
#11
|
|
Registered User
Join Date: Jan 2006
Location: The =305=
Posts: 521
|
Re: 98 350 No Start Issues.
Timing is Computer Controlled.
Would My tach workk if either the cam or crank sensor were out?
Also what about a FPR or Ignition switch, could that cause this, those were just some more things I found searching the site.
__________________
98 C1500 EC Step Side: 350, DI/DO Magnaflow, K&N filter, 3.73's, 33x10.50, 15" Cragar V-5, 4" susp. lift, 1" body lift, red top, big 3, rollnlock, halo head lights, clear corners, black tails, cb/pa, light bar
Last edited by Fishnfergie; 05-09-2008 at 11:17 PM.
|
|
|
|
|
05-09-2008, 11:22 PM
|
#12
|
|
Registered User
Join Date: Oct 2007
Location: TN
Age: 26
Posts: 4,728
|
Re: 98 350 No Start Issues.
Guessing here but tach should be controlled off of the dizzy or cam.
FPR could be leaking into the vac line, but it should still start. Worth looking into though.
Don't know about the ignition though. I wouldn't think so.
__________________
03 Silverado ECSB, Dmax, Allison, 3.73 G80
96 Silverado ECSB, 350, 4L60E, 3.42 G80
89 Camaro, 5 speed, 4.56's, Powertrax Locker
49 F-1, flathead 6, 4 speed, 2wd, unknown rear end. Old rust bucket.
|
|
|
|
|
05-10-2008, 08:07 AM
|
#13
|
|
Registered User
Join Date: Sep 2007
Location: atlantic canada
Age: 28
Posts: 335
|
Re: 98 350 No Start Issues.
When you turn it over does it seem to turn over faster , I am guessing it Jumped its timing or bad timing chain ,wouldnt hurt to look into if all else fails
|
|
|
|
|
05-10-2008, 08:48 AM
|
#14
|
|
Registered User
Join Date: Jan 2006
Location: The =305=
Posts: 521
|
Re: 98 350 No Start Issues.
I dont think it cranks faster.
Also I have an after market alarm, how does this kill the truck normally?
__________________
98 C1500 EC Step Side: 350, DI/DO Magnaflow, K&N filter, 3.73's, 33x10.50, 15" Cragar V-5, 4" susp. lift, 1" body lift, red top, big 3, rollnlock, halo head lights, clear corners, black tails, cb/pa, light bar
|
|
|
|
|
05-10-2008, 09:22 AM
|
#15
|
|
Registered User
Join Date: Sep 2007
Location: atlantic canada
Age: 28
Posts: 335
|
Re: 98 350 No Start Issues.
pop the number 1 spark plug out and find your timing marks on the crankshaft , stick a long Clean screw driver or something in the sparkplug hole and Turn it over MANUALY with a Good size ratchet and socket and wait and feel for the piston to come to the complete top and than look at your timing marks and see where the timing is. and that will tell you if it jump timing.
Note - thats just a faster way of checking it , it could be something totaly different but its worth a shot.
|
|
|
|
|
05-10-2008, 11:04 AM
|
#16
|
|
Registered User
Join Date: Jan 2006
Location: The =305=
Posts: 521
|
Re: 98 350 No Start Issues.
I cant find the mark that is on the block on my engine, it is a 98 vortec, I have got mixed info on whether it even has one since it is a 98.
__________________
98 C1500 EC Step Side: 350, DI/DO Magnaflow, K&N filter, 3.73's, 33x10.50, 15" Cragar V-5, 4" susp. lift, 1" body lift, red top, big 3, rollnlock, halo head lights, clear corners, black tails, cb/pa, light bar
|
|
|
|
|
05-10-2008, 11:05 AM
|
#17
|
|
Diesel Nut
Join Date: Dec 2006
Location: Minnesota
Age: 40
Posts: 1,293
|
Re: 98 350 No Start Issues.
My old 1996 350 did that samething. After I took the engine out I noticed my cam shaft snapped in half.
__________________
Duramax badger truck pullers association.
Real trucks don't have spark plugs!
2007 3500HD NBS Duramax
2005 2500HD Duramax sled puller
1996 1500 6.5L converted SVO/WVO 16city/22hwy
2006 arctic cat prowler 650 H1
5th wheel 34' PJ flatdeck trailer
|
|
|
|
|
05-10-2008, 07:23 PM
|
#18
|
|
Registered User
Join Date: Jan 2006
Location: The =305=
Posts: 521
|
Re: 98 350 No Start Issues.
Quote:
|
Originally Posted by justy
My old 1996 350 did that samething. After I took the engine out I noticed my cam shaft snapped in half.
|
Great now I have something to look forward too... 
__________________
98 C1500 EC Step Side: 350, DI/DO Magnaflow, K&N filter, 3.73's, 33x10.50, 15" Cragar V-5, 4" susp. lift, 1" body lift, red top, big 3, rollnlock, halo head lights, clear corners, black tails, cb/pa, light bar
|
|
|
|
|
05-10-2008, 07:45 PM
|
#19
|
|
Registered User
Join Date: May 2008
Location: texas
Age: 30
Posts: 3
|
Re: 98 350 No Start Issues.
you can check to see if the crank sensor is working properly with a scan tool. There has been alot of problems with this sensor gm made a tsb about it.
|
|
|
|
|
05-10-2008, 07:57 PM
|
#20
|
|
Registered User
Join Date: Jan 2008
Location: Trail ,BC ,Canada
Age: 49
Posts: 389
|
Re: 98 350 No Start Issues.
Pull # 1 plug out . Place finger over hole . Have helper click engine over to see where compression stroke (firing) is. Then see if the timing marks line up (0 degrees). Pull dist cap and see where the rotor is pointing( #1 or somewhere else). If you're getting spark the cam and dizzy are probably OK . The tach is driven off the ignition coil not the dizzy . How many miles on the motor? Sounds like timing chain . If the cam jumped you should be getting a crank /cam out of sync code .
__________________
1997 K2500 NV4500 3.73 ECSB 388 Westers tune
1991 Z28 350 Stealth Ram 3.42 5 speed
|
|
|
|
| Thread Tools |
|
|
| Display Modes |
 Linear Mode
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
|
|
