Recent Topics
Weird Electrical Issue.
by George7941
04/21/18 09:35 AM
Ever puchase movies from cable provider?
by ZZman
04/21/18 09:31 AM
Mann HU 711/51 X oil filter for Miniís $6.50 Amzn
by 1JZ_E46
04/21/18 09:30 AM
M1 Oil For My Trucks Engine
by BlueOvalFitter
04/21/18 09:30 AM
Toyota SofTex upholstery
by CincyDavid
04/21/18 09:09 AM
Castrol Dexron VI $5 QT at AA
by The_Cams
04/21/18 08:41 AM
Liqui moly engine flush
by gallydif
04/21/18 08:27 AM
Uneasy about Bosch Cartridge Filter
by tc1446
04/21/18 07:36 AM
Harvest King 0w20 Full Synthetic
by oilstudent24
04/21/18 07:22 AM
oil spec.
by ernied
04/21/18 07:03 AM
Great dog story to start your day!
by AZjeff
04/21/18 06:51 AM
BITOGers in the wild west
by Shannow
04/21/18 03:54 AM
'10 Wrangler 5,350 Miles Cam2 5w30 Synavex
by montero1
04/21/18 03:31 AM
Jack Horner Ted Talks - Dinosaurs - good fun watch
by Shannow
04/21/18 02:00 AM
PP life span in engine
by barber613
04/21/18 01:58 AM
Ford Focus parts clearout! 2000-2007
by Lolvoguy
04/21/18 01:48 AM
Bad O2 sensor?
by Spetz
04/21/18 01:13 AM
Let's talk Renault
by dishdude
04/21/18 01:05 AM
Ipad covers
by daves87rs
04/21/18 12:11 AM
Did I screw myself...
by NoNameJoe
04/20/18 10:15 PM
Newest Members
mowermon, Slashdotfx, Dilly, Amersham, Irene
64801 Registered Users
Who's Online
81 registered (aquariuscsm, ag_ghost, acmesupply, 1JZ_E46, ABursell, 12 invisible), 1611 Guests and 41 Spiders online.
Key: Admin, Global Mod, Mod
Forum Stats
64801 Members
68 Forums
282059 Topics
4709062 Posts

Max Online: 3590 @ 01/24/17 08:07 PM
Donate to BITOG
Page 1 of 3 1 2 3 >
Topic Options
#4727912 - 04/15/18 03:32 PM 1997 GMC truck issue.
wtd Offline


Registered: 06/25/02
Posts: 1896
Loc: southwest Mo.
My fiance and her 15 year old son own this truck. It has 29,353 original miles on it and has the 5.7L vortec in it. It originally was my fiance's grandfather's truck and basically is was given to the 15 year old son.

The other day her son got the truck stuck in the field. He was with two of his friends and was told to leave the truck alone and his older brother was going to get another truck to get it out. Instead of listening, they ended up getting the truck out but now the engine is missing in cylinders 2 & 8.

Supposedly one of the friends got in the truck and revved the engine up to redline to get it out and who knows how many times this was done.

The plugs, wires, cap and rotor were all replaced about 2,000 miles ago. I pulled the plugs in those cylinders and they look fine with no obvious cracks or damage to the tips. I pulled the cap off and all of the contacts look fine as does the rotor tip.

I pulled the valve cover on that side to see if anything looked abnormal but every thing looked fine.

My fiance's father is a backyard mechanic and did some research and said he found information that states that if you over rev this engine, it will mess up the fuel injectors in the spider and says that we need to replace the fuel injection spider.

My question is, what other tests do we need to do to figure out why we have these misfires and has anyone else heard that over revving the engine will cause a fuel injection problem on this type of fuel system? Thanks.

Wayne
_________________________
2014 Mustang GT
1998 Chevy K3500
1998 Chevy K1500
(2) 1992 Cavaliers
1970 Monte Carlo

Top
#4727919 - 04/15/18 03:38 PM Re: 1997 GMC truck issue. [Re: wtd]
mk378 Offline


Registered: 09/27/15
Posts: 1323
Loc: USA
Start with a compression test to check for mechanical damage.

Top
#4727929 - 04/15/18 03:44 PM Re: 1997 GMC truck issue. [Re: wtd]
skyactiv Online   content


Registered: 03/02/13
Posts: 4165
Loc: The Midwest
It would nice if the damage was bent push rods.

https://www.amazon.com/ACDelco-19210687-...customerReviews
_________________________
Wife: 15' Audi A4 quattro 6 speed manual
Me: 13' VW GTI 3 door 6 speed manual

Top
#4727932 - 04/15/18 03:47 PM Re: 1997 GMC truck issue. [Re: mk378]
michaelluscher Offline


Registered: 10/07/12
Posts: 2379
Loc: Staten Island, NY
Originally Posted By: mk378
Start with a compression test to check for mechanical damage.


After that, see if it still has the original Poppet style CSFI spider unit on it

If it does, it may have just been it's time

Those style injectors get problematic with time

You can drop in a replacement updated MPFI style replacement
_________________________
'06 Toyota Camry SE V6 3MZ-FE 96k
'01 Mercury Villager Estate VG33E 52k
'06 Ford Taurus SE Vulcan 60k
'13 Chrysler 300 3.6 Pentastar 202k

Top
#4727944 - 04/15/18 03:55 PM Re: 1997 GMC truck issue. [Re: wtd]
wtd Offline


Registered: 06/25/02
Posts: 1896
Loc: southwest Mo.
It does still have the original style CSFI system since it's low mileage. It was running fine prior to the over revving of the engine. The valve springs on those cylinders look fine. I guess we can pull the rocker arms to check to see if the push rods are bent. They don't appear bent but you can't see the entire rod with them installed.

I will do a compression test to see what it tells us. Thanks for the suggestions.

Wayne
_________________________
2014 Mustang GT
1998 Chevy K3500
1998 Chevy K1500
(2) 1992 Cavaliers
1970 Monte Carlo

Top
#4727971 - 04/15/18 04:28 PM Re: 1997 GMC truck issue. [Re: wtd]
dlundblad Offline


Registered: 09/30/13
Posts: 9642
Loc: Indiana
This is just sad.

The kid is going to destroy this thing have regrets the rest of his life after he grows up.
_________________________
03 Jeep WJ 4.0 197k Castrol Edge 10w40 HM Fram XG16
02 Volvo S60 2.4T 170k M1 0w40 Mann HU819X
97 Chevy Blazer 4.3 142k Rotella T5 10w30 Fram TG3980


Top
#4727988 - 04/15/18 04:39 PM Re: 1997 GMC truck issue. [Re: wtd]
CT8 Offline


Registered: 10/09/14
Posts: 10542
Loc: Idaho
Get a new girl friend.
_________________________
Artificial intelligence is no match for natural stupidity, we shall prevail

Top
#4728036 - 04/15/18 05:20 PM Re: 1997 GMC truck issue. [Re: wtd]
tomcat27 Offline


Registered: 06/25/09
Posts: 3541
Loc: Chicago, IL
as stated, check compression. at first I thought the fuel injection suggestion was crazy - until the spider was mentioned - then I recall some discussion with a mechanic friend on this.
_________________________
2015 Rogue, 2014 Sentra, 2001 Camry, 2005 Starcraft, 1998 Dodge B1500
1996 Sebring Jx, 1984 F150, 1970 Cougar, 2013 XT250, 2010 Vstar, 2014 CTX1300

Top
#4728051 - 04/15/18 05:33 PM Re: 1997 GMC truck issue. [Re: wtd]
Alex_V Offline


Registered: 04/10/16
Posts: 1113
Loc: Campbellsville, KY
Whatever it is, make the kid pay for it. It will keep the truck, but more importantly him, in better shape.
_________________________
I like Chevy and Valvoline.

'13 Cruze, 1.4T, 110K
'85 GMC C3500, 454, 130K
'82 Mercedes 300CD, OM617 turbo, 165K
'67 Suburban, 350, 331K

Top
#4728062 - 04/15/18 05:41 PM Re: 1997 GMC truck issue. [Re: dlundblad]
wtd Offline


Registered: 06/25/02
Posts: 1896
Loc: southwest Mo.
Originally Posted By: dlundblad
This is just sad.

The kid is going to destroy this thing have regrets the rest of his life after he grows up.


I doubt that since he doesn't appreciate much of anything. He doesn't even like the truck and wants one like his brother has which is a 2014 F150 crew cab 4x4.
_________________________
2014 Mustang GT
1998 Chevy K3500
1998 Chevy K1500
(2) 1992 Cavaliers
1970 Monte Carlo

Top
#4728064 - 04/15/18 05:42 PM Re: 1997 GMC truck issue. [Re: Alex_V]
wtd Offline


Registered: 06/25/02
Posts: 1896
Loc: southwest Mo.
Originally Posted By: Alex_V
Whatever it is, make the kid pay for it. It will keep the truck, but more importantly him, in better shape.


His mom has already told him he is paying for the repairs but even that doesn't seem to phase him.
_________________________
2014 Mustang GT
1998 Chevy K3500
1998 Chevy K1500
(2) 1992 Cavaliers
1970 Monte Carlo

Top
#4728128 - 04/15/18 06:42 PM Re: 1997 GMC truck issue. [Re: wtd]
Nick1994 Offline


Registered: 02/19/13
Posts: 9806
Loc: Phoenix, AZ
Do a compression test, as said above. Could be bent pushrods.
_________________________
2015 Hyundai Sonata 2.4L 76k PU 5w30 & OEM
2000 Toyota Camry 2.2L 227k M1 AFE 0w30 & Wix
1996 Jeep Cherokee 4.0L 145k M1 HM 10w40 & Fram Ultra

Top
#4728174 - 04/15/18 07:22 PM Re: 1997 GMC truck issue. [Re: wtd]
dave1251 Offline


Registered: 07/15/05
Posts: 8554
Loc: Maricopa, AZ
Try your best to ensure he pays for the repairs. This is all you can do.
_________________________
make the inside of your engine oil cap white.
don't use.

Top
#4728186 - 04/15/18 07:35 PM Re: 1997 GMC truck issue. [Re: wtd]
dlundblad Offline


Registered: 09/30/13
Posts: 9642
Loc: Indiana
Originally Posted By: wtd
Originally Posted By: dlundblad
This is just sad.

The kid is going to destroy this thing have regrets the rest of his life after he grows up.


I doubt that since he doesn't appreciate much of anything. He doesn't even like the truck and wants one like his brother has which is a 2014 F150 crew cab 4x4.


You have my condolences. He sounds like a real winner.
_________________________
03 Jeep WJ 4.0 197k Castrol Edge 10w40 HM Fram XG16
02 Volvo S60 2.4T 170k M1 0w40 Mann HU819X
97 Chevy Blazer 4.3 142k Rotella T5 10w30 Fram TG3980


Top
#4728191 - 04/15/18 07:38 PM Re: 1997 GMC truck issue. [Re: dlundblad]
dogememe Online   content


Registered: 04/15/17
Posts: 423
Loc: SF BAY AREA, CA
Originally Posted By: dlundblad
This is just sad.

The kid is going to destroy this thing have regrets the rest of his life after he grows up.


yeah, screw this, have the kid use his own money to pay a shop to diagnose and fix it. otherwise, the learning will never occur. can't afford it? no problem, truck stays parked. i would be much more appreciate of a beautiful low mileage gmt400 than this brat.


Edited by dogememe (04/15/18 07:40 PM)
_________________________
10 Ford Escape 2.5 ~66K: Magnatec 5W-20, ACDelco.
07 Ford Crown Vic 4.6 ~122K: SynPower 5W-30, Royal Purple.
97 Chevy Suburban 5.7 ~213K: Chevron Supreme 5W-30, Wix.
Car: Oil, Filter. 7K Mile OCIs

Top
Page 1 of 3 1 2 3 >