Question about 1999 Chevrolet Silverado 1500

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01 silverado no start, fuel in oil, good spark, cranks opposite

4.3 usually runs great, tried to start in a.m, would'nt fire, crank engine over for more than ten seconds then when i let off the starter the engine revolves the opposite way and blows out the t.b ,ended up flooding, checekd all ignition, good spark, good timming, changed oil, . no codes, help please

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  • mbeaudy Dec 04, 2008

    thanks for the advice. Whineds up the engine was super flooded. the same was suggested by a collegue. changed the fuel filter and checked pressure, all good, checked with a gm tech, was advised to re remove the distributor and bake it, remove all spark plugs and bake them to remove excess fuel, sure enough thats all it was. Even after having removed the rotor and cap the night before and cleaning it with electronic cleaner and removing spark plugs one by one, it's just that touchy. In passing it has 379 000 km

  • Anonymous Mar 16, 2014

    Fitted new battery it started & ran good, switched off ten minutes later won't run. cranks good.

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You need to check your fuel pressure could be not enough or to much or your plugs are fouled are you sure the timming did not jump how many miles are on it?

Posted on Dec 02, 2008

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I have overhauled engine for Isuzu bighorn 1998 petrol/gasoline engine. the 6VE1.timing belt is ok. Still it has a had start.


is this the Single head cam or twin version?
no photo of engine, so answers will be weak.

double posted. is this the single cam or twin cam engine?????? per side, the twin cam has 4 cams. 2 /bank.
i can not understand your questions, at all.
ok you overhauled the engine,
nor can i understand , still hard start.
does that mean it cranks slow and turn runs and drive perfectly ?
or cranks fast, but hard to start and runs perfectly?
or does that mean it cranks fast, starts, then misfires and runs crapppy-pappy?
hark, the devil really is in the details, no?

Generic answer.
all the wires and sensors , hoses not put back correctly.
oil full, coolant full, fresh gas in tank,
then you crank engine with no spark (I pull fuses)
and the crank it until oil pressure is good. yah, do that.

if really savvy, we check for top end oiling next. cranked only.


ok looks like oil pressure is good,(I don't want to wreck a new engine) (also check compression on a new engine, to see if we messed up., if not 150psi or more, you timed it wrong)



then we crank it, ok, it cranks and don't start
I check spark and it's timing using my timing light, it's wrong, i retime it, no and its ok. as is ..
ok sparks good, on all 6 cylinders. checked carefully and for static time.

so now start engine on test fuel,
if fails, see above for why.!
ok it runs for say 2-3 seconds and stalls. good.
We yell at the gas engine gods. O'BOY my engine seems to be OK ! progress....

next is fueling , ill stop now, as typing a book on fuel injection
is not easy here.
but fuel pressure is next. on all EFI engines. as is good fuel.
when did car last drive perfectly, 1 month ago,
10 years. what?
if long ago, the gas is bad. as are related parts all gunked up, like filters, and injectors.
and even the pump, or its sock packed in GUNK.
as you can see we have no history on the car, so.
really anything is possible. even vandalism.

btw we never just throw and engine in a car.
we check.:
1: compression, gee even sitting on a pallet.!
why install (6hr labor) a dead engine,?
2: then cranked oil pressure, spark/fuel off line.
same reasons.
3: then if all that is ok, I do check top end oiling now, if not any top end, the cams will not last very long. they will smoke and seize up in a flash.

this is how its done correctly, ask how.

Aug 20, 2016 | Isuzu Cars & Trucks

2 Answers

How to check a ignition coil pack to see if its good,


the coil does not crank the engine , the starter does that, sorry.
(if you ever had to hand or foot crank and engine , youd under stand that. (like motor cycles or boat engines, or per 30s cars.)

in fact will crank all day with no spark parts on car..

x2, the scan tool does tell you why there is NO STARTS, CRANKS OK. The pcm can detect, one missfire in 10 cmp;ckp signals.
  • CRANK FOR 5 SECONDS
  • release, key
  • scan tool has DTC errors?, read the believe them.
no engine stated of 4 or more,

U checked everything but spark,
why, check spark at all cylinders, all most fire or the engine will not run or stall.
That test be first, if not starting (AFTER SCAN TEST)

IF NO spark fuses are next , not last.
lets do no start fails tests. (cranks perfectly 200 to 300 rpm)
  1. : check fuses
  2. key on, CEL lamp must glow, if not , ECU fuse blown.
  3. crank with scan tool , see P03xx DTC errors, see RPM dead.?
  4. check for spark? got spark x4 or times number of cylinders?
  5. got spark try test fuel now, runs for 3 seconds?
  6. yes, runs on test fuel now means lost fueling
  7. no, dont run on test fuel, means, 1 to 5 done wrong above or engine compression bad.
  8. bad fueling, huge number of tests. check fuel pressure now.
confused, try a shop and watch them, learn.

Jan 12, 2015 | 2005 Suzuki Forenza

1 Answer

2001 Pontiac Grand Prix GT 3800 won't start!


it sounds like it kicked the timing chain , the last time you shut it off

Mar 04, 2014 | Chevrolet Tahoe Cars & Trucks

1 Answer

1993 Grand Cherokee Lardo runs great then it decides it does not want to start


THE JEEP ZJ ! NO ENGINE STATED, so real hard to help !!!!
cranks robustly (crank shaft actually turns, look)
and will not start.?
no engine stated, there are many , must know engine to fix them.
so did you check spark at all cylinders. ?
and timing of them.
and spark wire firing order, one guy had a friend swap them for fun.
(he had a accident later.. LOL)
if spark is hot on all 4 or 6 cylinders.
and #1 fires near zero on the pulley, then
try test fuel, spray it. runs for 3 seconds and sounds good.
that mean engine and spark are good and you lost fueling
the steps are same 1920 to now, on mr. otto cycle engines.

a 60k tune up is more.
1: spark plugs , J plugs, stock & gap'ed right.
2: spark wire. new.
3: cap and rotor.
4: air filter, and fuel filter.

when you replaced the dizzy(why?) did you read the FSM
to retime it, it times injection too.
be sad to make it worse throwing parts on top of a good dizzy

there is no reason to replace the DIZZY unless
one of these fails #42 or 54. 54 is dead dizzy Cmp sensor.
ever see this? DIAGNOSICS.
https://sites.google.com/site/thezjpage/zj-diagnostic-trouble-codes-dtc-s

got a ignition spark strobe light?, this is childs play.
check spark x6
check firing near TDC #1 , near 0 degrees. see hood spec for exact spec. (open hood ,USA, look up, see EPA, timing spec, BINGO.)
and firing order, do not cross wire to wrong plugs
do not guess at firing order or rotor direction or all this fails.
true for all cars with dizzy,
the fsm is there. no need to guess. ever

ZJ
http://www.jeep4x4center.com/knowledge-base/index.htm?utm_source=cj#service

  1. if engine is good (compresson)
  2. and spark is good
  3. and not flooded, (look)
if not flooded it will run for 3 seconds, at least.
if flooded
use super secret , unflood mode, crank WOT
wide open throttle, its in the oper , guide this for all cars made, 1988 to now.

Feb 20, 2014 | Jeep Cars & Trucks

1 Answer

Car will not start like its not catching fire , i have a 2008 suzuki xl7


old post. but will answer.
the starter only cranks the engine, that is it's only job.
if it cranks robustly (at crank shaft pulley ,see it) then its ok.
250 RPM is typical cranking speed. RPM
no starts are complex.
for any engine Gas, to start you needs 4 things.
  1. ALL FUSE TO EFI GOOD, TEST THEM. CEL glows key on?
  2. full engine compression and crank vacuum 5" HG or more.?>??
  3. Spark , try a fresh tune up with fresh spark plugs. all 6 sparking.?
  4. Fueling , must be right. not flooding , not starving
if spark and engine are good, all engines(most) will start with test fuel.
This one simple test. proves the engine is ok, and spark is ok.
and the fuel system is dead.
these checks , will let is work the 4 systems. that might fail.
this is the classic basics path.
and works 99.% of the time.

exceptions, are clogged melted cat.
or stuck wide open EGR
or ISC stuck closed, (no starting air.) use 10% throttle to prove that.
or flooding, if flooding use super secret unflood mode (opr guide)
hold the throttle (right foot) pedal to the floor, this cuts fueling
and the flooded engine starts, for full time or runs and floods and stalls again.
This is called basics , in all ASE books in print.
RTM.


Jan 11, 2014 | Suzuki Cars & Trucks

2 Answers

96 tahoe . It will not crank up unless I pour gas into the throttle body . Once it cranks it will run untill I shut it off but want crank by itself . Why


First, lets be clear with terms. To crank is to turn the engine over, you can do this manually with a wrench on many vehicles. It requires no spark or air. To turn over or to fire is when you achieve combustion. Example: You could pull the spark plugs on a vehicle and turn the key and it would crank, but it wouldn't fire or turn over.

Now it sounds to me like your vehicle is cranking but not firing unless you pour gas in it. My first thoughts are fuel system. I'm assuming it can't be fuel pump because it runs once it fires. Perhaps the fuel pump isn't priming itself, or perhaps somehow air is getting in the line between the injector and fuel pump? Test the fuel pump first by turning the car from off to on (not starting, just on). You will usually hear a short buzzing noise coming from the engine bay that stops shortly afterwards, that's your fuel pump pressurizing the line. (Pro Tip: If you ever try to take your key from off to straight to start and the vehicle doesn't start on the first try, but does the second time no problem, try delaying at on for a moment before trying to start. This gives your fuel pump time to pressurize the line.) Assuming your fuel pump is charging the line, the next place to look would be at the path the fuel takes to the throttle body. When you crank it over and it doesn't start, are you getting any fuel? If you can't see where the fuel enters the system try smelling the exhaust while cranking without it firing, if it smells of fuel you're good and need to look at air flow and spark, if not it's a fuel issue.

Past that, I'll leave it to someone more experienced than myself, but that would be how I troubleshot my own vehicle.

Oct 17, 2013 | Cars & Trucks

1 Answer

2001 Silverado 1500 5.3 won't start. replaced fuel regulator, pump, crank sensor. I have spark, engine fires once, then nothing... Fuel pressure shows 50psi with key on...


Does it try to start by using starting fluid in the intake ?
I'm fairly sure fuel pressure should be 55-65 psi so 50 may be low.
Do you loose spark as the engine is cranking ?
Any trouble codes stored in the computer ?

Aug 28, 2013 | Chevrolet Silverado 1500 Cars & Trucks

1 Answer

2000 silverado not firing


You need to start from the ignition unit, if the engine cranks but does not fire then chcek for the fuel settings, if the fuel filter , fuel pump are in order, then check for the plugs, remove them and test for good intensity spark. If the coil and the triggers with the timings are good then the engine must fire. remove plugs , clean test and reset.

Jun 06, 2011 | 2000 Chevrolet Silverado 1500

1 Answer

Car firing but will not start plugs sooty


You could try the Clear Flood procedure....Throttle wide open and crank engine . This sometimes works, but.....

These engines suffer from fuel wash down. The gasoline washes away the oil in the cylinders.....and compression goes away, not making the fuel fire off.

The film of oil in the cylinders and rings seals the piston to the bore making for good compression.

Remove the spark plugs....crank over the motor to eject raw fuel...dribble a couple of spoonfuls of motor oil down each plug hole and crank briefly.

Install plugs and try restart.

Jan 14, 2011 | 1993 Jaguar XJ6

2 Answers

Surges on acceleration


i would really change the fuel filter, spark plugs and that should do it

Jun 23, 2009 | 2000 Chevrolet Silverado 1500

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