Skip to content
KickTyres
MajorVery commonEngine

Toyota Crown: Intake valve carbon build-up and injector issues (4GR-FSE / 3GR-FSE direct injection)

Intake valve carbon build-up and injector issues (4GR-FSE / 3GR-FSE direct injection) is a very common engine fault on the Toyota Crown on the 2003–2018 cars, and we rate it major. Putting it right costs $600 to $2,500 at New Zealand independent workshop rates. Below is what goes wrong, the symptoms to notice on a test drive, where to look, and what to ask the seller before you hand over any money. It is one of 24 documented faults on the Toyota Crown.

Vehicle
Toyota Crown
Engine
4GR-FSE / 3GR-FSE
Years
2003–2018
Fuel
petrol
System
Engine

This page covers the Toyota Crown as a model. Some faults only affect particular engines or build years — enter a plate below to narrow the list to one car.

All Toyota Crown faults24 documented faults on this model

What you are looking at

A single common-rail diesel fuel injector photographed against a plain background.Example of the part — not this vehicle

A common-rail diesel injector. Contamination damages the nozzle at the tip.

Panoha · CC BY-SA 3.0 · Wikimedia Commons

What goes wrong

The 2.5 4GR-FSE and 3.0 3GR-FSE V6s used across the S180, S200 and S210 Crowns are direct-injection-only engines, so no fuel washes over the intake valves and oil vapour from the crankcase ventilation system bakes onto them as hard carbon. Over 100,000-150,000 km this causes rough cold idle, misfires, hesitation and lost economy. The direct injectors themselves also foul and are expensive to replace. A walnut-blast intake clean restores running, but it is a recurring maintenance item unique to these D-4 engines - many ex-Japan cars arrive never having had it done.

What you would notice

  • Rough, shaky idle when cold that smooths out once warm
  • Hesitation or flat spots when accelerating
  • Check engine light with misfire codes
  • Noticeably worse fuel economy than expected

How to check it

Where to look. Intake ports and valves behind the intake manifold, top rear of the V6 engine

  1. Start the engine stone cold (feel the bonnet first to make sure the seller hasn't pre-warmed it) and watch for a lumpy, shaking idle or flickering revs in the first minute.

  2. On the test drive, accelerate gently from low revs and feel for stumble.

  3. Ask whether an intake/walnut-blast carbon clean has ever been done and look for an invoice.

Parts involved: Fuel injector.

What it costs to put right

$600 to $2,500 at New Zealand independent workshop rates. That is for this job on its own, not for the car.

An estimate, in NZD, for the repair as normally carried out. What a specific car costs depends on which part has failed and what it damaged on the way — treat this as the floor for a negotiation, not a quote.

Ask the seller

  • “Has the intake ever been walnut-blasted or manually decarboned?”
  • “Does it idle roughly on cold mornings?”
  • “Have any injectors or ignition coils been replaced?”

Now check the Toyota Crown you are actually looking at

Everything above is true of the model, and it is free. What it does not tell you is whether THIS car has been looked after: its odometer history and whether the reading has ever gone backwards, whether there is still money owing on it, whether it has been reported stolen, how many owners it has had and what it is really worth today. That comes from the official records for that plate. Enter the plate for the free details, or get the full history and a market valuation from $13.49.

Not sure what you would be paying for? See what a full KickTyres check includes.

Where this comes from

The failure described above is documented in the sources below. The inspection instructions and the cost estimate are KickTyres’ own interpretation of them.

  • Toyota-Club.net GR-series engine FAQ (D-4 carbon deposits)
  • NJ Global Auto Parts 4GR-FSE engine problems guide
  • ToyotaNation direct-injection carbon build-up threads

Toyota Crown buyer questions

Is intake valve carbon build-up and injector issues (4gr-fse / 3gr-fse direct injection) serious on a Toyota Crown?

We rate it major and very common on the Toyota Crown. The 2.5 4GR-FSE and 3.0 3GR-FSE V6s used across the S180, S200 and S210 Crowns are direct-injection-only engines, so no fuel washes over the intake valves and oil vapour from the crankcase ventilation system bakes onto them as hard carbon. Over 100,000-150,000 km this causes rough cold idle, misfires, hesitation and lost economy. The direct injectors themselves also foul and are expensive to replace. A walnut-blast intake clean restores running, but it is a recurring maintenance item unique to these D-4 engines - many ex-Japan cars arrive never having had it done.

How much does it cost to fix on a Toyota Crown?

$600 to $2,500 at New Zealand independent workshop rates. That figure is for this job on its own. A car showing the symptoms on this page is usually worth either walking away from or negotiating down by at least the repair figure.

Which Toyota Crown years are affected?

Our research records this fault on the 2003–2018 Toyota Crown. Build dates move around, especially on imported cars, so treat the range as the years to look hardest at rather than a guarantee either way. The official records tell you the exact build and first registration date for the car in front of you.

How do I check for it before I buy?

Start the engine stone cold (feel the bonnet first to make sure the seller hasn't pre-warmed it) and watch for a lumpy, shaking idle or flickering revs in the first minute. On the test drive, accelerate gently from low revs and feel for stumble. Ask whether an intake/walnut-blast carbon clean has ever been done and look for an invoice. Look here: Intake ports and valves behind the intake manifold, top rear of the V6 engine