Question about Chevrolet 1500

1 Answer

350 tbi backfires under acceleration. Smokes. Third spark plug from front of engine on passengers side wet with gas and oil.

Posted by on

×

Ad

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 492 Answers

Get a compression check of all cylinders. Sounds like an oil control problem (valve guide seals or worn piston rings. A complete tune up might help some and you might try a hotter heat range on the spark plugs.

Posted on Mar 14, 2011

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Spark plugs to coil pack chart


Firing order is 1-6-5-4-3-2.
Cylinder locations: left front bank-1-3-5, right rear bank:2-4-6.

Coil pack on front left side of engine: front coil: #1 to passenger side, #4 to driver's side of coil. Middle coil: #5 on passenger side, #2 on driver's side of coil. Rear coil: #3 on passenger side of coil, #6 on driver's side of coil.

Nov 25, 2013 | 1990 Buick LeSabre

1 Answer

86 el camino stalls under load


As mentioned above, engine could be starving for fuel; but
also consider ignition system - as engine makes more power, maximum cylinder pressures increase. A higher spark voltage is then needed to ignite mixture (at a few degrees before top dead center... top of piston travel).
If coil is weak, plugs fouled, or plug gap too wide, adequate spark may not occur. This may cause missing,
loss of power, sometimes backfiring (backfiring may occur if timing is off, or intake valve leaky, also). If you replace the fuel filter, 'kit' the carb, but problem remains,
look to ignition system.

Diagnostic process - put a fuel pressure gauge in line, where fuel line enters carb. Rig so can see gauge, while driving. Have a passenger watch fuel pressure as you drive; especially while accelerating. If fuel pressure drops during acceleration, then its either fuel pump or filter. If pressure remains stable, consider carb issue.
If possible, test with exhaust gas analyzer, while engine
under load (possibly at an emissions test place). If lean under acceleration, its a carb problem. If not, look at
ignition system (emission test diagnostics should help here, also). Oh, and one thing I did once.... forgot to release parking brake..... duh.

Best of luck !

Dec 28, 2012 | 1986 Chevrolet El Camino

1 Answer

1994 Chevy full-size Blazer with 5.7 Liter 350 T.B.I. backfires and loses power when going uphill. The vehicle has a new motor with less than 3,000 miles on it, but every bolt on part came off of the old...


Was it originaly a 305? If so then the Electronic Spark Control (ESC), PROM and fuel injectors should be changed to 350 stuff.
Any pinging? Check Engine light?
Maybe take the ignitoon module out and have it tested at an Auto Zone. Without being able to do a hands on diag I am guessing maybe an issue with spark advance when under a load.

Another guess would be a low tank of fuel on a steep hill. Could it be starvation?

Sep 01, 2011 | 1996 Chevrolet C/K 3500

1 Answer

Changing pvc valve


1995 Geo Truck Tracker 4WD 1.6L TBI SOHC 4cyl
The PCV Valve is located under hood, center, upper engine area, top of engine, mounted in passenger side of intake manifold.

The low gas mileage and the versatility that your 1995 through 1999 Geo Tracker offers are two benefits of owning it. The maintenance needs to be kept up on your Geo Tracker. One form of this maintenance is to replace the valve cover gasket once you have driven 100,000 miles or more.
  1. Allow your engine to cool. Disconnect the negative battery cable. Remove the air inlet hose and air intake case or air cleaner housing. Detach the PCV valve hose from the PCV valve. Separate and remove the spark plug wires and the accelerator cable from their clips.
  2. Loosen and remove the valve cover bolts. Lift the cover up and off. Using a flathead screwdriver, gently nudge the gasket out of the gasket seating area. Using automotive engine cleaner and a clean cloth rag, clean the gasket seating area.
  3. Place the new gasket in the gasket seating area. Put the cover back into place. Put the bolts in and then using a torque wrench tighten them. Do not over tighten the bolts or the gasket will not fit correctly. Reconnect the spark plug wires and the accelerator cable in the holding clips.
  4. Reconnect the rubber hose to the PCV valve. Install the air intake case, or air cleaner housing, and the air inlet hose. Reconnect the negative battery cable. Add oil to the car and start the engine. Allow the car to run 10 to 15 minutes. This will allow the oil to lubricate the engine while it moves to the top.
I hope helps with this (remember rated this help) Good luck.

Dec 29, 2009 | 1995 Geo Tracker

1 Answer

Exhaust smokes when engine starts


Most common reason for that is worn valve stem seals and or guides or gunk buildup in the cylinder head blocking oil return holes.... Or, broken piston ring or burned piston lands. (use compression test to verify that) Knocking can be from oil detonating in cylinder or bad rod bearing etc.

Aug 01, 2009 | 2002 Suzuki XL-7

3 Answers

No power up hills and pinging noises come from TBI little back fire.


Sounds like the knock sensor has failed. It's on the passenger side at the bottom of the engine block, in front of the starter. One wire going to it. Have you checked the timing lately, maybe it has moved?

Apr 15, 2009 | Chevrolet Suburban 1500 Cars & Trucks

2 Answers

Cant find oil filter on my 89 s10 blazer?


I have an 89 s10 blazer with the 4.3 tbi. the oil filter is a remote oil filter. there are two hoses running from the engine to the filter, which is located in the engine compartment in front of the left front wheel. it's mounted to the side.

Jan 15, 2009 | 1989 Chevrolet S-10 Blazer

1 Answer

Smokes badly, lost horsepower, backfires, and oil is leaking


looks like you need an engine rebuild.
you have a v-6 engine right? if you do then these engines are easy to rebuild

Jan 11, 2009 | 1993 Lincoln Town Car

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

163 people viewed this question

Ask a Question

Usually answered in minutes!

Top Chevrolet Experts

yadayada
yadayada

Level 3 Expert

76070 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22156 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

8266 Answers

Are you a Chevrolet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...