BMW 3-Series
Pontiac Transport
Ford E-350 Van

1992 Pontiac Transport 3800 why does the engine cough hard enough to knock off the vacuum hose that goes to that round thing the master cylinder is bolted to just happens sometimes when you start it?

181920

Top Answer
User Avatar
Wiki User
2007-12-08 07:02:40
2007-12-08 07:02:40

There are many causes of coughing. Some are very serious, some are not. The checking and testing procedures are too complex to explain in just a few words, and to be able to say well it's this or no it is this other cause. Each test requuires the experience, and has its follow up test to further isolate and will confirm the problem. Too lean fuel mixture will cause this. Similar symptoms as valve and ignition timming. Camshaft problems, which shows up as loss of compression, which can be valve timing being out, ie. an intake valve being open while the exhaust or firing stroke is in effect. Broken camshafts are possible with this engine, as well. Valve lifters need time to pressure up, and if they are badly worn, or the oil is badly in need of a change, the lifters will be sluggish starting the manage the valves properly. If the oil is too thick, oil can't get ito the lifters quickly, and therefore won't pump up quickly. Ignition timing can do this, ( too much spark advance ). This also generally shows up as what is known as ping. With ping, there is actually an apparent knock when you step on the accelerator hard, and make the engine work hard. Worn timing chain. So loose that the camshaft is not in proper time with the crankshaft/piston strokes, and an intake valve out of time. The timing chian can actually jump a cog and still run, but it will cough, and usually not run really well. A compression test will tell the most quickly, and the condition of the valves, camshaft, and lifters, which might also mean burned valves, or possibly a worn or broken camshaft.

1
๐Ÿ™
0
๐Ÿคจ
0
๐Ÿ˜ฎ
0
๐Ÿ˜‚
0

Related Questions

User Avatar

The brake master cylinder is what pushes brake fluid to each wheel when you press on the brake pedal. If it's bad or marginal, your braking will suffer or disappear entirely! This is something that you need to address right away! FriPilot

User Avatar

basicly what happens is sometimes they burn it or sometimes they bury it under the ground

User Avatar

In aerobic respiration, electron transport occurs inside the mitochondria. In photosynthesis, electron transport occurs inside the chloroplasts.

User Avatar

It is used to transport hydrogen to the electron transport chain.

User Avatar

SOMETIMES sometimes sometimes sometimes sometimgs sometimes sometimes sometimes sometimgs

User Avatar

that means theirs no compression in that cylinder a hole in some thing ,not supposed to be their

User Avatar

The electron transport chain >>

User Avatar

Segmentation of data happens at transport layer. Because transport layer is responsible for successful transportation of data through out the network.

User Avatar

There are several things that happen in the electron transport chain. The electrons will form succinate and NADH which use the transport chain to get to oxygen.

User Avatar

Respiration is the transport of oxygen to cells within tissues and the transport of carbon dioxide in the opposite direction.

User Avatar

The electron transport chain happens in the cristae membrane inside the mitochondria.

User Avatar

as electrons from the Krebs cycle move down the electron transport chain energy level is reduced.

User Avatar

they are sometimes aftershocks

User Avatar

The electron transport system stops reacting if there is no oxygen present. This causes soreness in the muscles.

User Avatar

Materials can move in and out of animal cells through one of two reasons: Passive transport or active transport. Passive transport happens naturally and requires no energy on the part of the cell. It usually happens through osmosis, diffusion, or facilitated diffusion. Active transport involves endocytosis, exocytosis, or molecules moving from a low concentration to high concentration. Active transport requires energy.

User Avatar

Depends on what the are tested with or for. Sometimes they are harmed, sometimes they aren't

User Avatar

sometimes it gets paid, sometimes it doesn't

User Avatar

It writhes like it is being tortured. Sometimes it will not do that, but that is what usually happens. Sometimes it will slither as fast as it can to get away.


Copyright ยฉ 2020 Multiply Media, LLC. All Rights Reserved. The material on this site can not be reproduced, distributed, transmitted, cached or otherwise used, except with prior written permission of Multiply.