Mechanical Repair
Fuel injection service near you
Fuel injection service: injectors tested, cleaned or replaced and the throttle body cleaned, to clear up rough idle, hesitation and misfires.
- Time at the shop
- 2 h
- about
- Mobile service
- Available
- at your address
- Shops in Canada
- 1
- doing this work
- Your price
- You set it
- shops bid on it
You set the budget
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1 shop in Canada does this
Mechanical Repair
What a fuel injection service is
Fuel injectors spray a fine, measured mist of fuel for each cylinder. Deposits slowly narrow that spray, and now and then an injector sticks, leaks or fails electrically. The engine answers with a rough idle, hesitation, misfires and higher fuel consumption. A fuel injection service starts with testing: fault codes, fuel pressure and fuel trims (the corrections the engine computer is making to the mixture) show whether the injectors are dirty, one has failed, or the cause lies somewhere else.
Dirty injectors are cleaned on the engine by running it on a pressurized solvent fed straight into the fuel rail, and the throttle body is cleaned with solvent and a soft brush. A failed injector is replaced with new seals. Direct-injection and diesel injectors work at far higher pressure, cost more, and often have to be coded to the engine computer.
- For cars, vans and trucks
- Takes about 2 h
- Can be done at your address
What does a fuel injection service cost?
It depends on your vehicle and the shop. Post a job with your budget and compare the bids shops near you send.
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Name your budget. Shops near you bid.
1 shop across Canada does fuel injection service.
What to expect
Fuel injection service, step by step
What the job normally covers, what to mention in your request, and the signs that it is time. Every shop says what its bid includes.
The job
What’s included
- Fault code scan with fuel trims and misfire counts reviewed
- Fuel pressure test and injector balance or leak-down check
- On-car injector cleaning with pressurized solvent fed through the fuel rail
- Throttle body cleaned with solvent, with an idle relearn where the vehicle needs one
- Failed injectors replaced with new seals and O-rings, once you approve the estimate
- New injectors coded to the engine computer on diesel and some direct-injection engines
- Fuel rail checked for leaks, codes cleared and the vehicle road tested
Checklist
Before you post
- 01Ask whether testing comes first, so you are not sold a cleaning for a fault it cannot fix
- 02Find out if your engine is port or direct injection; direct-injection parts and labour cost noticeably more
- 03For a replacement, confirm whether the estimate covers one injector or the full set, and new or remanufactured parts
- 04Ask whether the intake manifold must come off on your engine, which adds labour and new gaskets
- 05Diesel owners: check that the shop can test common-rail injectors and code replacements
- 06Ask what warranty applies to new injectors and to the labour of fitting them
Signs
When you need it
- Rough or shaky idle, especially with the engine warm
- Hesitation or stumbling when you pull away or accelerate
- Check engine light with misfire, lean or rich mixture codes
- Fuel consumption creeping up with no change in how you drive
- Hard starting or a smell of raw gas after the engine is shut off
Sound familiar?Tell shops near you what you need and what you want to spend.
Get bidsHow it works
Get a fuel injection service done in four steps
You set the budget and choose the shop. Posting is free, and you pay the shop you hire once the work is 100% done.
- 01
Post your job
Choose the service, describe the job and your vehicle, and set your budget. It takes two minutes and costs nothing.
- 02
Shops compete
Nearby shops that do the work see your request and send their best offer: price, when they can start, what is included.
- 03
Accept the best offer
Compare bids, ratings and distance, then hire one shop. The others are told, politely.
- 04
Talk and get it done
Your conversation with the shop opens right away to agree on the day. You pay only after the job is complete.
Keep exploring
Related services
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Engine diagnostics for a check engine light or rough running: a technician reads the fault codes, tests live data and reports the cause and the fix.
Fuel pump replacement
Fuel pump replacement once a pressure test confirms the fault: the pump is changed in the tank or on the engine, then leak checked and road tested.
Auto Electrical
Ignition system repair
Ignition system repair for misfires, hard starts and rough idle: worn spark plugs, failed coils or a faulty ignition switch replaced, then road tested.
Oxygen sensor replacement
O2 sensor replacement: a failed oxygen or air-fuel ratio sensor confirmed by scan, swapped and verified so the check engine light can be cleared.
Maintenance & Servicing
Scheduled maintenance service
Scheduled maintenance service to your owner’s manual: oil and filter, rotation, fluids, plugs and an inspection, with a dated record for your vehicle.
Questions
Questions about fuel injection service
General answers for drivers in Canada. The shop you hire confirms the details for your vehicle.
Is fuel injector cleaning worth it?
It is worth paying for when testing points to deposits: a rough idle, fuel trims drifting lean, plenty of kilometres and no single failed part. It will not revive an injector with an electrical fault or one that leaks, and it does nothing for worn spark plugs or vacuum leaks, which cause the same symptoms. A shop that tests first and shows you the readings is recommending a repair, not reading from a menu.
Does fuel injector cleaner in the gas tank work?
Only mildly. A bottle poured into the tank is inexpensive and helps keep clean injectors clean when used now and then, but its detergent is spread through a whole tank of gas, so it rarely clears injectors that already cause a misfire. The shop service bypasses the tank and feeds concentrated solvent straight to the fuel rail while the engine runs, which is a much stronger treatment.
Should I replace one fuel injector or all of them?
When one injector fails electrically or leaks on an engine without many kilometres, replacing that one is reasonable. On a high-kilometre engine, or when several injectors test weak, a full set saves paying the same labour twice, particularly where the intake manifold must be removed for access. Ask to see the balance test result for each cylinder before you decide.
Will injector cleaning remove carbon buildup on a direct-injection engine?
No. On an engine with direct injection only, fuel is sprayed inside the cylinder, so nothing washes the back of the intake valves and carbon collects there. Cleaning the injectors never reaches it. That buildup is removed by a separate intake valve cleaning, commonly done by blasting the valves with crushed walnut shell through the intake ports with the manifold off.
How long does a fuel injection service take?
An on-car injector cleaning with a throttle body clean takes an hour to ninety minutes. Replacing injectors on a four-cylinder with good access is typically two to three hours. Engines that hide the injectors under the intake manifold, and most diesels, can keep the vehicle for the better part of a day.
Something else to ask? Once you hire a shop, you talk to it directly in your request’s conversation.
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